From 512e9a480f282b06f5bbc84e9e3a8c2b0661d246 Mon Sep 17 00:00:00 2001
From: Julien Froidefond <julien.froidefond@cdbdx.biz>
Date: Sat, 3 Jan 2026 18:55:12 +0100
Subject: [PATCH] refactor: remove caching-related API endpoints and
 configurations, update preferences structure, and clean up unused services

---
 docs/api.md                                   |  22 +-
 docs/caching.md                               | 549 ----------
 docs/services.md                              |  36 +-
 prisma/schema.prisma                          |  41 +-
 public/sw.js                                  |  45 +-
 .../books/[bookId]/read-progress/route.ts     |  21 -
 .../clear/[libraryId]/[seriesId]/route.ts     |  46 -
 src/app/api/komga/cache/clear/route.ts        |  34 -
 src/app/api/komga/cache/entries/route.ts      |  27 -
 src/app/api/komga/cache/mode/route.ts         |  60 --
 src/app/api/komga/cache/size/route.ts         |  31 -
 src/app/api/komga/home/route.ts               |  31 -
 .../libraries/[libraryId]/series/route.ts     |  37 -
 .../komga/series/[seriesId]/books/route.ts    |  40 -
 src/app/api/komga/ttl-config/route.ts         |  87 --
 .../[libraryId]/ClientLibraryPage.tsx         |  18 +-
 .../series/[seriesId]/ClientSeriesPage.tsx    |  18 +-
 src/app/settings/page.tsx                     |   8 +-
 src/components/home/ClientHomePage.tsx        |  16 +-
 src/components/layout/ClientLayout.tsx        |  65 +-
 src/components/reader/PhotoswipeReader.tsx    |   2 -
 src/components/reader/hooks/useImageLoader.ts |   2 -
 src/components/settings/AdvancedSettings.tsx  | 103 +-
 src/components/settings/CacheModeSwitch.tsx   |  61 --
 src/components/settings/CacheSettings.tsx     | 938 ------------------
 src/components/settings/ClientSettings.tsx    |  18 +-
 src/components/ui/book-cover.tsx              |   4 +-
 src/components/ui/series-cover.tsx            |   4 +-
 src/constants/errorCodes.ts                   |  10 -
 src/constants/errorMessages.ts                |  10 -
 src/contexts/ImageCacheContext.tsx            |  58 --
 src/hooks/useImageUrl.ts                      |  14 -
 src/i18n/messages/en/common.json              | 102 +-
 src/i18n/messages/fr/common.json              | 102 +-
 src/lib/services/base-api.service.ts          | 201 +---
 src/lib/services/book.service.ts              |  53 +-
 src/lib/services/circuit-breaker.service.ts   | 114 ---
 src/lib/services/config-db.service.ts         |  56 +-
 src/lib/services/home.service.ts              | 129 +--
 src/lib/services/library.service.ts           |  61 +-
 src/lib/services/preferences.service.ts       |  22 +-
 src/lib/services/request-monitor.service.ts   |  44 -
 src/lib/services/request-queue.service.ts     | 109 --
 src/lib/services/series.service.ts            | 104 +-
 src/lib/services/server-cache.service.ts      | 730 --------------
 src/lib/utils/image-url.ts                    |   3 +-
 src/types/cache.ts                            |   1 -
 src/types/komga.ts                            |  14 -
 src/types/preferences.ts                      |  16 -
 49 files changed, 244 insertions(+), 4073 deletions(-)
 delete mode 100644 docs/caching.md
 delete mode 100644 src/app/api/komga/cache/clear/[libraryId]/[seriesId]/route.ts
 delete mode 100644 src/app/api/komga/cache/clear/route.ts
 delete mode 100644 src/app/api/komga/cache/entries/route.ts
 delete mode 100644 src/app/api/komga/cache/mode/route.ts
 delete mode 100644 src/app/api/komga/cache/size/route.ts
 delete mode 100644 src/app/api/komga/ttl-config/route.ts
 delete mode 100644 src/components/settings/CacheModeSwitch.tsx
 delete mode 100644 src/components/settings/CacheSettings.tsx
 delete mode 100644 src/contexts/ImageCacheContext.tsx
 delete mode 100644 src/hooks/useImageUrl.ts
 delete mode 100644 src/lib/services/circuit-breaker.service.ts
 delete mode 100644 src/lib/services/request-monitor.service.ts
 delete mode 100644 src/lib/services/request-queue.service.ts
 delete mode 100644 src/lib/services/server-cache.service.ts
 delete mode 100644 src/types/cache.ts

diff --git a/docs/api.md b/docs/api.md
index 5abe859..c1cc867 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -27,22 +27,6 @@
 - **Body** : `{ url: string, username: string, password: string }`
 - **Réponse** : `{ message: string, config: Config }`
 
-### GET /api/komga/ttl-config
-
-- **Description** : Récupération de la configuration TTL du cache
-- **Réponse** : `{ defaultTTL: number, homeTTL: number, ... }`
-
-### POST /api/komga/ttl-config
-
-- **Description** : Sauvegarde de la configuration TTL
-- **Body** : `{ defaultTTL: number, homeTTL: number, ... }`
-- **Réponse** : `{ message: string, config: TTLConfig }`
-
-### GET /api/komga/cache/mode
-
-- **Description** : Récupération du mode de cache actuel
-- **Réponse** : `{ mode: string }`
-
 ## 📚 Bibliothèques
 
 ### GET /api/komga/libraries
@@ -123,13 +107,13 @@
 ### GET /api/preferences
 
 - **Description** : Récupération des préférences utilisateur
-- **Réponse** : `{ showThumbnails: boolean, cacheMode: "memory" | "file", showOnlyUnread: boolean, debug: boolean }`
+- **Réponse** : `{ showThumbnails: boolean, showOnlyUnread: boolean, displayMode: object, background: object, readerPrefetchCount: number }`
 
 ### PUT /api/preferences
 
 - **Description** : Mise à jour des préférences utilisateur
-- **Body** : `{ showThumbnails?: boolean, cacheMode?: "memory" | "file", showOnlyUnread?: boolean, debug?: boolean }`
-- **Réponse** : `{ showThumbnails: boolean, cacheMode: "memory" | "file", showOnlyUnread: boolean, debug: boolean }`
+- **Body** : `{ showThumbnails?: boolean, showOnlyUnread?: boolean, displayMode?: object, background?: object, readerPrefetchCount?: number }`
+- **Réponse** : `{ showThumbnails: boolean, showOnlyUnread: boolean, displayMode: object, background: object, readerPrefetchCount: number }`
 
 ## 🧪 Test
 
diff --git a/docs/caching.md b/docs/caching.md
deleted file mode 100644
index e50eef5..0000000
--- a/docs/caching.md
+++ /dev/null
@@ -1,549 +0,0 @@
-# Système de Caching
-
-Ce document décrit l'architecture et les stratégies de caching de StripStream.
-
-## Vue d'ensemble
-
-Le système de caching est organisé en **3 couches indépendantes** avec des responsabilités clairement définies :
-
-```
-┌─────────────────────────────────────────────────────────────┐
-│                        NAVIGATEUR                            │
-│  ┌────────────────────────────────────────────────────────┐ │
-│  │  Service Worker (Cache API)                            │ │
-│  │  → Offline support                                     │ │
-│  │  → Images (covers + pages)                             │ │
-│  └────────────────────────────────────────────────────────┘ │
-└─────────────────────────────────────────────────────────────┘
-                            ↓
-┌─────────────────────────────────────────────────────────────┐
-│                      SERVEUR NEXT.JS                         │
-│  ┌────────────────────────────────────────────────────────┐ │
-│  │  ServerCacheService                                    │ │
-│  │  → Données API Komga                                   │ │
-│  │  → Stale-while-revalidate                              │ │
-│  │  → Mode fichier ou mémoire                             │ │
-│  └────────────────────────────────────────────────────────┘ │
-└─────────────────────────────────────────────────────────────┘
-                            ↓
-┌─────────────────────────────────────────────────────────────┐
-│                      SERVEUR KOMGA                           │
-└─────────────────────────────────────────────────────────────┘
-```
-
-## Couche 1 : Service Worker (Client)
-
-### Fichier
-
-`public/sw.js`
-
-### Responsabilité
-
-- Support offline de l'application
-- Cache persistant des images (couvertures et pages de livres)
-- Cache des ressources statiques Next.js
-
-### Stratégies
-
-#### Images : Cache-First
-
-```javascript
-// Pour toutes les images (covers + pages)
-const isImageResource = (url) => {
-  return (
-    (url.includes("/api/v1/books/") &&
-      (url.includes("/pages") || url.includes("/thumbnail") || url.includes("/cover"))) ||
-    (url.includes("/api/komga/images/") &&
-      (url.includes("/series/") || url.includes("/books/")) &&
-      url.includes("/thumbnail"))
-  );
-};
-```
-
-**Comportement** :
-
-1. Vérifier si l'image est dans le cache
-2. Si oui → retourner depuis le cache
-3. Si non → fetch depuis le réseau
-4. Si succès → mettre en cache + retourner
-5. Si échec → retourner 404
-
-**Avantages** :
-
-- Performance maximale (lecture instantanée depuis le cache)
-- Fonctionne offline une fois les images chargées
-- Économise la bande passante
-
-#### Navigation et ressources statiques : Network-First
-
-```javascript
-// Pour les pages et ressources _next/static
-event.respondWith(
-  fetch(request)
-    .then((response) => {
-      // Mise en cache si succès
-      if (response.ok && (isNextStaticResource || isNavigation)) {
-        cache.put(request, response.clone());
-      }
-      return response;
-    })
-    .catch(async () => {
-      // Fallback sur le cache si offline
-      const cachedResponse = await cache.match(request);
-      if (cachedResponse) return cachedResponse;
-
-      // Page offline si navigation
-      if (request.mode === "navigate") {
-        return cache.match("/offline.html");
-      }
-    })
-);
-```
-
-**Avantages** :
-
-- Toujours la dernière version quand online
-- Fallback offline si nécessaire
-- Navigation fluide même sans connexion
-
-### Caches
-
-| Cache                   | Usage                        | Stratégie     | Taille   |
-| ----------------------- | ---------------------------- | ------------- | -------- |
-| `stripstream-cache-v1`  | Ressources statiques + pages | Network-First | ~5 MB    |
-| `stripstream-images-v1` | Images (covers + pages)      | Cache-First   | Illimité |
-
-### Nettoyage
-
-- Automatique lors de l'activation du Service Worker
-- Suppression des anciennes versions de cache
-- Pas d'expiration (contrôlé par l'utilisateur via les paramètres du navigateur)
-
-## Couche 2 : ServerCacheService (Serveur)
-
-### Fichier
-
-`src/lib/services/server-cache.service.ts`
-
-### Responsabilité
-
-- Cache des réponses API Komga côté serveur
-- Optimisation des temps de réponse
-- Réduction de la charge sur Komga
-
-### Stratégie : Stale-While-Revalidate
-
-Cette stratégie est **la clé de la performance** de l'application.
-
-#### Principe
-
-```
-Requête → Cache existe ?
-  ├─ Non    → Fetch normal + mise en cache
-  └─ Oui    → Cache valide ?
-      ├─ Oui    → Retourne immédiatement
-      └─ Non    → Retourne le cache expiré (stale)
-                  ET revalide en background
-```
-
-#### Implémentation
-
-```typescript
-async getOrSet<T>(
-  key: string,
-  fetcher: () => Promise<T>,
-  type: keyof typeof ServerCacheService.DEFAULT_TTL = "DEFAULT"
-): Promise<T> {
-  const cacheKey = `${user.id}-${key}`;
-  const cachedResult = this.getStale(cacheKey);
-
-  if (cachedResult !== null) {
-    const { data, isStale } = cachedResult;
-
-    // Si le cache est expiré, revalider en background
-    if (isStale) {
-      this.revalidateInBackground(cacheKey, fetcher, type, key);
-    }
-
-    return data as T; // Retour immédiat
-  }
-
-  // Pas de cache, fetch normal
-  const data = await fetcher();
-  this.set(cacheKey, data, type);
-  return data;
-}
-```
-
-#### Avantages
-
-✅ **Temps de réponse constant** : Le cache expiré est retourné instantanément  
-✅ **Données fraîches** : Revalidation en background pour la prochaine requête  
-✅ **Pas de délai** : L'utilisateur ne subit jamais l'attente de revalidation  
-✅ **Résilience** : Même si Komga est lent, l'app reste rapide
-
-#### Inconvénients
-
-⚠️ Les données peuvent être légèrement obsolètes (jusqu'au prochain refresh)  
-⚠️ Nécessite un cache initialisé (première requête toujours lente)
-
-### Modes de stockage
-
-L'utilisateur peut choisir entre deux modes :
-
-#### Mode Mémoire (par défaut)
-
-```typescript
-cacheMode: "memory";
-```
-
-- Cache stocké en RAM
-- **Performances** : Très rapide (lecture < 1ms)
-- **Persistance** : Perdu au redémarrage du serveur
-- **Capacité** : Limitée par la RAM disponible
-- **Idéal pour** : Développement, faible charge
-
-#### Mode Fichier
-
-```typescript
-cacheMode: "file";
-```
-
-- Cache stocké sur disque (`.cache/`)
-- **Performances** : Rapide (lecture 5-10ms)
-- **Persistance** : Survit aux redémarrages
-- **Capacité** : Limitée par l'espace disque
-- **Idéal pour** : Production, haute charge
-
-### Time-To-Live (TTL)
-
-Chaque type de données a un TTL configuré :
-
-| Type        | TTL par défaut | Justification                      |
-| ----------- | -------------- | ---------------------------------- |
-| `DEFAULT`   | 5 minutes      | Données génériques                 |
-| `HOME`      | 10 minutes     | Page d'accueil (données agrégées)  |
-| `LIBRARIES` | 24 heures      | Bibliothèques (rarement modifiées) |
-| `SERIES`    | 5 minutes      | Séries (métadonnées + progression) |
-| `BOOKS`     | 5 minutes      | Livres (métadonnées + progression) |
-| `IMAGES`    | 7 jours        | Images (immuables)                 |
-
-#### Configuration personnalisée
-
-Les TTL peuvent être personnalisés par l'utilisateur via la base de données :
-
-```typescript
-// Modèle Prisma : TTLConfig
-{
-  defaultTTL: 5 * 60 * 1000,
-  homeTTL: 10 * 60 * 1000,
-  librariesTTL: 24 * 60 * 60 * 1000,
-  seriesTTL: 5 * 60 * 1000,
-  booksTTL: 5 * 60 * 1000,
-  imagesTTL: 7 * 24 * 60 * 60 * 1000,
-}
-```
-
-### Isolation par utilisateur
-
-Chaque utilisateur a son propre cache :
-
-```typescript
-const cacheKey = `${user.id}-${key}`;
-```
-
-**Avantages** :
-
-- Pas de collision entre utilisateurs
-- Progression de lecture individuelle
-- Préférences personnalisées
-
-### Invalidation du cache
-
-Le cache peut être invalidé :
-
-#### Manuellement
-
-```typescript
-await cacheService.delete(key); // Une clé
-await cacheService.deleteAll(prefix); // Toutes les clés avec préfixe
-await cacheService.clear(); // Tout le cache
-```
-
-#### Automatiquement
-
-- Lors d'une mise à jour de progression
-- Lors d'un changement de favoris
-- Lors de la suppression d'une série
-
-#### API
-
-```
-DELETE /api/komga/cache/clear    // Vider tout le cache
-DELETE /api/komga/home           // Invalider le cache home
-```
-
-## Couche 3 : Cache HTTP (Navigateur)
-
-### Responsabilité
-
-- Cache basique géré par le navigateur
-- Headers HTTP standard
-
-### Configuration
-
-#### Next.js ISR (Incremental Static Regeneration)
-
-```typescript
-export const revalidate = 60; // Revalidation toutes les 60 secondes
-```
-
-Utilisé uniquement pour les routes avec rendu statique.
-
-#### Headers explicites (désactivé)
-
-Les headers HTTP explicites ont été **supprimés** car :
-
-- Le ServerCacheService gère déjà le caching efficacement
-- Évite la confusion entre plusieurs couches de cache
-- Simplifie le debugging
-
-Avant (supprimé) :
-
-```typescript
-NextResponse.json(data, {
-  headers: {
-    "Cache-Control": "public, s-maxage=60, stale-while-revalidate=120",
-  },
-});
-```
-
-Maintenant :
-
-```typescript
-NextResponse.json(data); // Pas de headers
-```
-
-## Flow de données complet
-
-Exemple : Chargement de la page d'accueil
-
-```
-1. Utilisateur → GET /
-   ↓
-2. Next.js → HomeService.getHomeData()
-   ↓
-3. HomeService → ServerCacheService.getOrSet("home-ongoing", ...)
-   ↓
-4. ServerCacheService
-   ├─ Cache valide ? → Retourne immédiatement
-   ├─ Cache expiré ? → Retourne cache + revalide en background
-   └─ Pas de cache ? → Fetch Komga + mise en cache
-   ↓
-5. Response → Client
-   ↓
-6. Images → Service Worker (Cache-First)
-   ├─ En cache ? → Lecture instantanée
-   └─ Pas en cache ? → Fetch + mise en cache
-```
-
-### Temps de réponse typiques
-
-| Scénario                      | Temps       | Détails                    |
-| ----------------------------- | ----------- | -------------------------- |
-| Cache ServerCache valide + SW | ~50ms       | Optimal                    |
-| Cache ServerCache expiré + SW | ~50ms       | Revalidation en background |
-| Pas de cache ServerCache + SW | ~200-500ms  | Première requête           |
-| Cache SW uniquement           | ~10ms       | Images seulement           |
-| Tout à froid                  | ~500-1000ms | Pire cas                   |
-
-## Cas d'usage
-
-### 1. Première visite
-
-```
-User → App → Komga (tous les caches vides)
-Temps : ~500-1000ms
-```
-
-### 2. Visite suivante (online)
-
-```
-User → ServerCache (valide) → Images SW
-Temps : ~50ms
-```
-
-### 3. Cache expiré (online)
-
-```
-User → ServerCache (stale) → Retour immédiat
-       ↓
-       Revalidation background → Mise à jour cache
-Temps ressenti : ~50ms (aucun délai)
-```
-
-### 4. Mode offline
-
-```
-User → Service Worker cache uniquement
-Fonctionnalités :
-✅ Navigation entre pages déjà visitées
-✅ Consultation des images déjà vues
-❌ Nouvelles données (nécessite connexion)
-```
-
-## Monitoring et debug
-
-### Logs de cache (recommandé pour le dev)
-
-Activez les logs détaillés du cache serveur :
-
-```bash
-# Dans docker-compose.dev.yml ou .env
-CACHE_DEBUG=true
-```
-
-**Format des logs** :
-
-```
-[CACHE HIT] home-ongoing | HOME | 0.45ms      # Cache valide
-[CACHE STALE] home-ongoing | HOME | 0.52ms    # Cache expiré (retourné + revalidation)
-[CACHE MISS] home-ongoing | HOME              # Pas de cache
-[CACHE SET] home-ongoing | HOME | 324.18ms    # Mise en cache
-[CACHE REVALIDATE] home-ongoing | HOME | 287ms # Revalidation background
-```
-
-📖 **Documentation complète** : [docs/cache-debug.md](./cache-debug.md)
-
-### API de monitoring
-
-#### Taille du cache serveur
-
-```bash
-GET /api/komga/cache/size
-Response: { sizeInBytes: 15728640, itemCount: 234 }
-```
-
-#### Mode de cache actuel
-
-```bash
-GET /api/komga/cache/mode
-Response: { mode: "memory" }
-```
-
-#### Changer le mode
-
-```bash
-POST /api/komga/cache/mode
-Body: { mode: "file" }
-```
-
-#### Vider le cache
-
-```bash
-POST /api/komga/cache/clear
-```
-
-### DevTools du navigateur
-
-#### Network Tab
-
-- Temps de réponse < 50ms = cache serveur
-- Headers `X-Cache` si configurés
-- Onglet "Timing" pour détails
-
-#### Application → Cache Storage
-
-Inspecter le Service Worker :
-
-- `stripstream-cache-v1` : Ressources statiques
-- `stripstream-images-v1` : Images
-
-Actions disponibles :
-
-- Voir le contenu
-- Supprimer des entrées
-- Vider complètement
-
-#### Application → Service Workers
-
-- État du Service Worker
-- "Unregister" pour le désactiver
-- "Update" pour forcer une mise à jour
-
-## Optimisations futures possibles
-
-### 1. Cache Redis (optionnel)
-
-- Pour un déploiement multi-instances
-- Cache partagé entre plusieurs serveurs
-- TTL natif Redis
-
-### 2. Compression
-
-- Compresser les données en cache (Brotli/Gzip)
-- Économie d'espace disque/mémoire
-- Trade-off CPU vs espace
-
-### 3. Prefetching intelligent
-
-- Précharger les séries en cours de lecture
-- Précharger les pages suivantes dans le reader
-- Basé sur l'historique utilisateur
-
-### 4. Cache Analytics
-
-- Ratio hit/miss
-- Temps de réponse moyens
-- Identification des données les plus consultées
-
-## Bonnes pratiques
-
-### Pour les développeurs
-
-✅ **Utiliser BaseApiService.fetchWithCache()**
-
-```typescript
-await this.fetchWithCache<T>(
-  "cache-key",
-  async () => this.fetchFromApi(...),
-  "HOME" // Type de TTL
-);
-```
-
-✅ **Invalider le cache après modification**
-
-```typescript
-await HomeService.invalidateHomeCache();
-```
-
-✅ **Choisir le bon TTL**
-
-- Court (1-5 min) : Données qui changent souvent
-- Moyen (10-30 min) : Données agrégées
-- Long (24h+) : Données quasi-statiques
-
-❌ **Ne pas cacher les mutations**  
-Les POST/PUT/DELETE ne doivent jamais être cachés
-
-❌ **Ne pas oublier l'isolation utilisateur**  
-Toujours préfixer avec `userId` pour les données personnelles
-
-### Pour les utilisateurs
-
-- **Mode mémoire** : Plus rapide, mais cache perdu au redémarrage
-- **Mode fichier** : Persistant, idéal pour production
-- **Vider le cache** : En cas de problème d'affichage
-- **Offline** : Consulter les pages déjà visitées
-
-## Conclusion
-
-Le système de caching de StripStream est conçu pour :
-
-🎯 **Performance** : Temps de réponse constants grâce au stale-while-revalidate  
-🔒 **Fiabilité** : Fonctionne même si Komga est lent ou inaccessible  
-💾 **Flexibilité** : Mode mémoire ou fichier selon les besoins  
-🚀 **Offline-first** : Support complet du mode hors ligne  
-🧹 **Simplicité** : 3 couches bien définies, pas de redondance
-
-Le système est maintenu simple avec des responsabilités claires pour chaque couche, facilitant la maintenance et l'évolution future.
diff --git a/docs/services.md b/docs/services.md
index b7828d9..a9a9fdb 100644
--- a/docs/services.md
+++ b/docs/services.md
@@ -7,10 +7,12 @@ Service de gestion de l'authentification
 ### Méthodes
 
 - `loginUser(email: string, password: string): Promise<UserData>`
+
   - Authentifie un utilisateur
   - Retourne les données utilisateur
 
 - `createUser(email: string, password: string): Promise<UserData>`
+
   - Crée un nouvel utilisateur
   - Retourne les données utilisateur
 
@@ -24,10 +26,11 @@ Service de gestion des bibliothèques
 ### Méthodes
 
 - `getLibraries(): Promise<Library[]>`
+
   - Récupère la liste des bibliothèques
-  - Met en cache les résultats
 
 - `getLibrary(libraryId: string): Promise<Library>`
+
   - Récupère une bibliothèque spécifique
   - Lance une erreur si non trouvée
 
@@ -47,9 +50,11 @@ Service de gestion des séries
 ### Méthodes
 
 - `getSeries(seriesId: string): Promise<Series>`
+
   - Récupère les détails d'une série
 
 - `getSeriesBooks(seriesId: string, page: number = 0, size: number = 24, unreadOnly: boolean = false): Promise<LibraryResponse<KomgaBook>>`
+
   - Récupère les livres d'une série
   - Supporte la pagination et le filtrage
 
@@ -63,15 +68,19 @@ Service de gestion des livres
 ### Méthodes
 
 - `getBook(bookId: string): Promise<{ book: KomgaBook; pages: number[] }>`
+
   - Récupère les détails d'un livre et ses pages
 
 - `updateReadProgress(bookId: string, page: number, completed: boolean = false): Promise<void>`
+
   - Met à jour la progression de lecture
 
 - `getPage(bookId: string, pageNumber: number): Promise<Response>`
+
   - Récupère une page spécifique d'un livre
 
 - `getCover(bookId: string): Promise<Response>`
+
   - Récupère la couverture d'un livre
 
 - `getPageThumbnail(bookId: string, pageNumber: number): Promise<Response>`
@@ -84,13 +93,15 @@ Service de gestion des images
 ### Méthodes
 
 - `getImage(path: string): Promise<ImageResponse>`
+
   - Récupère une image depuis le serveur
-  - Gère le cache des images
 
 - `getSeriesThumbnailUrl(seriesId: string): string`
+
   - Génère l'URL de la miniature d'une série
 
 - `getBookThumbnailUrl(bookId: string): string`
+
   - Génère l'URL de la miniature d'un livre
 
 - `getBookPageUrl(bookId: string, pageNumber: number): string`
@@ -103,29 +114,20 @@ Service de gestion de la configuration
 ### Méthodes
 
 - `getConfig(): Promise<Config>`
+
   - Récupère la configuration Komga
 
 - `saveConfig(config: Config): Promise<Config>`
+
   - Sauvegarde la configuration Komga
 
 - `getTTLConfig(): Promise<TTLConfig>`
+
   - Récupère la configuration TTL
 
 - `saveTTLConfig(config: TTLConfig): Promise<TTLConfig>`
   - Sauvegarde la configuration TTL
 
-## 🔄 ServerCacheService
-
-Service de gestion du cache serveur
-
-### Méthodes
-
-- `getCacheMode(): string`
-  - Récupère le mode de cache actuel
-
-- `clearCache(): void`
-  - Vide le cache serveur
-
 ## ⭐ FavoriteService
 
 Service de gestion des favoris
@@ -142,6 +144,7 @@ Service de gestion des préférences
 ### Méthodes
 
 - `getPreferences(): Promise<Preferences>`
+
   - Récupère les préférences utilisateur
 
 - `savePreferences(preferences: Preferences): Promise<void>`
@@ -164,13 +167,12 @@ Service de base pour les appels API
 ### Méthodes
 
 - `buildUrl(config: Config, path: string, params?: Record<string, string>): string`
+
   - Construit une URL d'API
 
 - `getAuthHeaders(config: Config): Headers`
+
   - Génère les en-têtes d'authentification
 
 - `fetchFromApi<T>(url: string, headers: Headers, raw?: boolean): Promise<T>`
   - Effectue un appel API avec gestion d'erreurs
-
-- `fetchWithCache<T>(key: string, fetcher: () => Promise<T>, type: CacheType): Promise<T>`
-  - Effectue un appel API avec mise en cache
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index ed1d2ed..e9529a2 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -21,7 +21,6 @@ model User {
 
   // Relations
   config      KomgaConfig?
-  ttlConfig   TTLConfig?
   preferences Preferences?
   favorites   Favorite[]
 
@@ -42,37 +41,16 @@ model KomgaConfig {
   @@map("komgaconfigs")
 }
 
-model TTLConfig {
-  id               Int      @id @default(autoincrement())
-  userId           Int      @unique
-  defaultTTL       Int      @default(5)
-  homeTTL          Int      @default(5)
-  librariesTTL     Int      @default(1440)
-  seriesTTL        Int      @default(5)
-  booksTTL         Int      @default(5)
-  imagesTTL        Int      @default(1440)
-  imageCacheMaxAge Int      @default(2592000) // 30 jours en secondes
-  createdAt        DateTime @default(now())
-  updatedAt        DateTime @updatedAt
-
-  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
-
-  @@map("ttlconfigs")
-}
-
 model Preferences {
-  id                      Int      @id @default(autoincrement())
-  userId                  Int      @unique
-  showThumbnails          Boolean  @default(true)
-  cacheMode               String   @default("memory") // "memory" | "file"
-  showOnlyUnread          Boolean  @default(false)
-  displayMode             Json
-  background              Json
-  komgaMaxConcurrentRequests Int   @default(5)
-  circuitBreakerConfig    Json
-  readerPrefetchCount     Int      @default(5)
-  createdAt               DateTime @default(now())
-  updatedAt               DateTime @updatedAt
+  id                  Int      @id @default(autoincrement())
+  userId              Int      @unique
+  showThumbnails      Boolean  @default(true)
+  showOnlyUnread      Boolean  @default(false)
+  displayMode         Json
+  background          Json
+  readerPrefetchCount Int      @default(5)
+  createdAt           DateTime @default(now())
+  updatedAt           DateTime @updatedAt
 
   user User @relation(fields: [userId], references: [id], onDelete: Cascade)
 
@@ -92,4 +70,3 @@ model Favorite {
   @@index([userId])
   @@map("favorites")
 }
-
diff --git a/public/sw.js b/public/sw.js
index aaa1742..ee0ae8c 100644
--- a/public/sw.js
+++ b/public/sw.js
@@ -1,11 +1,8 @@
 // StripStream Service Worker - Version 1
-// Architecture: Cache-as-you-go for images and static resources only
-// API data caching is handled by ServerCacheService on the server
+// Architecture: Cache-as-you-go for static resources only
 
 const VERSION = "v1";
 const STATIC_CACHE = `stripstream-static-${VERSION}`;
-const IMAGES_CACHE = `stripstream-images-${VERSION}`;
-const DATA_CACHE = `stripstream-data-${VERSION}`;
 const RSC_CACHE = `stripstream-rsc-${VERSION}`;
 const BOOKS_CACHE = "stripstream-books"; // Never version this - managed by DownloadManager
 
@@ -20,29 +17,18 @@ function isNextStaticResource(url) {
   return url.includes("/_next/static/");
 }
 
-function isImageRequest(url) {
-  return url.includes("/api/komga/images/");
-}
-
-function isApiDataRequest(url) {
-  return url.includes("/api/komga/") && !isImageRequest(url);
-}
-
 function isNextRSCRequest(request) {
   const url = new URL(request.url);
   return url.searchParams.has("_rsc") || request.headers.get("RSC") === "1";
 }
 
-// Removed: shouldCacheApiData - API data is no longer cached by SW
-// API data caching is handled by ServerCacheService on the server
-
 // ============================================================================
 // Cache Strategies
 // ============================================================================
 
 /**
  * Cache-First: Serve from cache, fallback to network
- * Used for: Images, Next.js static resources
+ * Used for: Next.js static resources
  */
 async function cacheFirstStrategy(request, cacheName, options = {}) {
   const cache = await caches.open(cacheName);
@@ -70,7 +56,7 @@ async function cacheFirstStrategy(request, cacheName, options = {}) {
 
 /**
  * Stale-While-Revalidate: Serve from cache immediately, update in background
- * Used for: API data, RSC payloads
+ * Used for: RSC payloads
  */
 async function staleWhileRevalidateStrategy(request, cacheName) {
   const cache = await caches.open(cacheName);
@@ -202,39 +188,24 @@ self.addEventListener("fetch", (event) => {
     return;
   }
 
-  // Route 1: Images → Cache-First with ignoreSearch
-  if (isImageRequest(url.href)) {
-    event.respondWith(cacheFirstStrategy(request, IMAGES_CACHE, { ignoreSearch: true }));
-    return;
-  }
-
-  // Route 2: Next.js RSC payloads → Stale-While-Revalidate
+  // Route 1: Next.js RSC payloads → Stale-While-Revalidate
   if (isNextRSCRequest(request)) {
     event.respondWith(staleWhileRevalidateStrategy(request, RSC_CACHE));
     return;
   }
 
-  // Route 3: API data → Network only (no SW caching)
-  // API data caching is handled by ServerCacheService on the server
-  // This avoids double caching and simplifies cache invalidation
-  if (isApiDataRequest(url.href)) {
-    // Let the request pass through to the network
-    // ServerCacheService will handle caching server-side
-    return;
-  }
-
-  // Route 4: Next.js static resources → Cache-First with ignoreSearch
+  // Route 2: Next.js static resources → Cache-First with ignoreSearch
   if (isNextStaticResource(url.href)) {
     event.respondWith(cacheFirstStrategy(request, STATIC_CACHE, { ignoreSearch: true }));
     return;
   }
 
-  // Route 5: Navigation → Network-First with SPA fallback
+  // Route 3: Navigation → Network-First with SPA fallback
   if (request.mode === "navigate") {
     event.respondWith(navigationStrategy(request));
     return;
   }
 
-  // Route 6: Everything else → Network only (no caching)
-  // This includes: API auth, preferences, and other dynamic content
+  // Route 4: Everything else → Network only (no caching)
+  // This includes: API calls, images, and other dynamic content
 });
diff --git a/src/app/api/komga/books/[bookId]/read-progress/route.ts b/src/app/api/komga/books/[bookId]/read-progress/route.ts
index 1ce426f..b943774 100644
--- a/src/app/api/komga/books/[bookId]/read-progress/route.ts
+++ b/src/app/api/komga/books/[bookId]/read-progress/route.ts
@@ -1,7 +1,6 @@
 import type { NextRequest } from "next/server";
 import { NextResponse } from "next/server";
 import { BookService } from "@/lib/services/book.service";
-import { SeriesService } from "@/lib/services/series.service";
 import { ERROR_CODES } from "@/constants/errorCodes";
 import { getErrorMessage } from "@/utils/errors";
 import { AppError } from "@/utils/errors";
@@ -30,16 +29,6 @@ export async function PATCH(
 
     await BookService.updateReadProgress(bookId, page, completed);
 
-    // Invalider le cache de la série après avoir mis à jour la progression
-    try {
-      const seriesId = await BookService.getBookSeriesId(bookId);
-      await SeriesService.invalidateSeriesBooksCache(seriesId);
-      await SeriesService.invalidateSeriesCache(seriesId);
-    } catch (cacheError) {
-      // Ne pas faire échouer la requête si l'invalidation du cache échoue
-      logger.error({ err: cacheError }, "Erreur lors de l'invalidation du cache de la série:");
-    }
-
     return NextResponse.json({ message: "📖 Progression mise à jour avec succès" });
   } catch (error) {
     logger.error({ err: error }, "Erreur lors de la mise à jour de la progression:");
@@ -77,16 +66,6 @@ export async function DELETE(
 
     await BookService.deleteReadProgress(bookId);
 
-    // Invalider le cache de la série après avoir supprimé la progression
-    try {
-      const seriesId = await BookService.getBookSeriesId(bookId);
-      await SeriesService.invalidateSeriesBooksCache(seriesId);
-      await SeriesService.invalidateSeriesCache(seriesId);
-    } catch (cacheError) {
-      // Ne pas faire échouer la requête si l'invalidation du cache échoue
-      logger.error({ err: cacheError }, "Erreur lors de l'invalidation du cache de la série:");
-    }
-
     return NextResponse.json({ message: "🗑️ Progression supprimée avec succès" });
   } catch (error) {
     logger.error({ err: error }, "Erreur lors de la suppression de la progression:");
diff --git a/src/app/api/komga/cache/clear/[libraryId]/[seriesId]/route.ts b/src/app/api/komga/cache/clear/[libraryId]/[seriesId]/route.ts
deleted file mode 100644
index 9d1aab6..0000000
--- a/src/app/api/komga/cache/clear/[libraryId]/[seriesId]/route.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-import { NextResponse } from "next/server";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
-import { LibraryService } from "@/lib/services/library.service";
-import { HomeService } from "@/lib/services/home.service";
-import { SeriesService } from "@/lib/services/series.service";
-import { revalidatePath } from "next/cache";
-import type { NextRequest } from "next/server";
-import logger from "@/lib/logger";
-
-export async function POST(
-  request: NextRequest,
-  { params }: { params: Promise<{ libraryId: string; seriesId: string }> }
-) {
-  try {
-    const { libraryId, seriesId } = await params;
-
-    await HomeService.invalidateHomeCache();
-    revalidatePath("/");
-
-    if (libraryId) {
-      await LibraryService.invalidateLibrarySeriesCache(libraryId);
-      revalidatePath(`/library/${libraryId}`);
-    }
-
-    if (seriesId) {
-      await SeriesService.invalidateSeriesBooksCache(seriesId);
-      await SeriesService.invalidateSeriesCache(seriesId);
-      revalidatePath(`/series/${seriesId}`);
-    }
-
-    return NextResponse.json({ message: "🧹 Cache vidé avec succès" });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la suppression du cache:");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.CLEAR_ERROR,
-          name: "Cache clear error",
-          message: getErrorMessage(ERROR_CODES.CACHE.CLEAR_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/cache/clear/route.ts b/src/app/api/komga/cache/clear/route.ts
deleted file mode 100644
index 16ff7df..0000000
--- a/src/app/api/komga/cache/clear/route.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import { NextResponse } from "next/server";
-import type { ServerCacheService } from "@/lib/services/server-cache.service";
-import { getServerCacheService } from "@/lib/services/server-cache.service";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
-import { revalidatePath } from "next/cache";
-import logger from "@/lib/logger";
-
-export async function POST() {
-  try {
-    const cacheService: ServerCacheService = await getServerCacheService();
-    await cacheService.clear();
-
-    // Revalider toutes les pages importantes après le vidage du cache
-    revalidatePath("/");
-    revalidatePath("/libraries");
-    revalidatePath("/series");
-    revalidatePath("/books");
-
-    return NextResponse.json({ message: "🧹 Cache vidé avec succès" });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la suppression du cache:");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.CLEAR_ERROR,
-          name: "Cache clear error",
-          message: getErrorMessage(ERROR_CODES.CACHE.CLEAR_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/cache/entries/route.ts b/src/app/api/komga/cache/entries/route.ts
deleted file mode 100644
index 0d149d9..0000000
--- a/src/app/api/komga/cache/entries/route.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-import { NextResponse } from "next/server";
-import type { ServerCacheService } from "@/lib/services/server-cache.service";
-import { getServerCacheService } from "@/lib/services/server-cache.service";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
-import logger from "@/lib/logger";
-
-export async function GET() {
-  try {
-    const cacheService: ServerCacheService = await getServerCacheService();
-    const entries = await cacheService.getCacheEntries();
-
-    return NextResponse.json({ entries });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la récupération des entrées du cache");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.SIZE_FETCH_ERROR,
-          name: "Cache entries fetch error",
-          message: getErrorMessage(ERROR_CODES.CACHE.SIZE_FETCH_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/cache/mode/route.ts b/src/app/api/komga/cache/mode/route.ts
deleted file mode 100644
index a6e2d04..0000000
--- a/src/app/api/komga/cache/mode/route.ts
+++ /dev/null
@@ -1,60 +0,0 @@
-import { NextResponse } from "next/server";
-import type { CacheMode, ServerCacheService } from "@/lib/services/server-cache.service";
-import { getServerCacheService } from "@/lib/services/server-cache.service";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
-import type { NextRequest } from "next/server";
-import logger from "@/lib/logger";
-
-export async function GET() {
-  try {
-    const cacheService: ServerCacheService = await getServerCacheService();
-    return NextResponse.json({ mode: cacheService.getCacheMode() });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la récupération du mode de cache:");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.MODE_FETCH_ERROR,
-          name: "Cache mode fetch error",
-          message: getErrorMessage(ERROR_CODES.CACHE.MODE_FETCH_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
-
-export async function POST(request: NextRequest) {
-  try {
-    const { mode }: { mode: CacheMode } = await request.json();
-    if (mode !== "file" && mode !== "memory") {
-      return NextResponse.json(
-        {
-          error: {
-            code: ERROR_CODES.CACHE.INVALID_MODE,
-            name: "Invalid cache mode",
-            message: getErrorMessage(ERROR_CODES.CACHE.INVALID_MODE),
-          },
-        },
-        { status: 400 }
-      );
-    }
-
-    const cacheService: ServerCacheService = await getServerCacheService();
-    cacheService.setCacheMode(mode);
-    return NextResponse.json({ mode: cacheService.getCacheMode() });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la mise à jour du mode de cache:");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.MODE_UPDATE_ERROR,
-          name: "Cache mode update error",
-          message: getErrorMessage(ERROR_CODES.CACHE.MODE_UPDATE_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/cache/size/route.ts b/src/app/api/komga/cache/size/route.ts
deleted file mode 100644
index e58c36d..0000000
--- a/src/app/api/komga/cache/size/route.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-import { NextResponse } from "next/server";
-import type { ServerCacheService } from "@/lib/services/server-cache.service";
-import { getServerCacheService } from "@/lib/services/server-cache.service";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
-import logger from "@/lib/logger";
-
-export async function GET() {
-  try {
-    const cacheService: ServerCacheService = await getServerCacheService();
-    const { sizeInBytes, itemCount } = await cacheService.getCacheSize();
-
-    return NextResponse.json({
-      sizeInBytes,
-      itemCount,
-      mode: cacheService.getCacheMode(),
-    });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la récupération de la taille du cache:");
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.SIZE_FETCH_ERROR,
-          name: "Cache size fetch error",
-          message: getErrorMessage(ERROR_CODES.CACHE.SIZE_FETCH_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/home/route.ts b/src/app/api/komga/home/route.ts
index ce5d085..48e3099 100644
--- a/src/app/api/komga/home/route.ts
+++ b/src/app/api/komga/home/route.ts
@@ -35,34 +35,3 @@ export async function GET() {
     );
   }
 }
-
-export async function DELETE() {
-  try {
-    await HomeService.invalidateHomeCache();
-    return NextResponse.json({ success: true });
-  } catch (error) {
-    logger.error({ err: error }, "API Home - Erreur lors de l'invalidation du cache:");
-    if (error instanceof AppError) {
-      return NextResponse.json(
-        {
-          error: {
-            code: error.code,
-            name: "Cache invalidation error",
-            message: getErrorMessage(error.code),
-          },
-        },
-        { status: 500 }
-      );
-    }
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.DELETE_ERROR,
-          name: "Cache invalidation error",
-          message: getErrorMessage(ERROR_CODES.CACHE.DELETE_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/libraries/[libraryId]/series/route.ts b/src/app/api/komga/libraries/[libraryId]/series/route.ts
index 3dd7160..2693188 100644
--- a/src/app/api/komga/libraries/[libraryId]/series/route.ts
+++ b/src/app/api/komga/libraries/[libraryId]/series/route.ts
@@ -53,40 +53,3 @@ export async function GET(
     );
   }
 }
-
-export async function DELETE(
-  request: NextRequest,
-  { params }: { params: Promise<{ libraryId: string }> }
-) {
-  try {
-    const libraryId: string = (await params).libraryId;
-
-    await LibraryService.invalidateLibrarySeriesCache(libraryId);
-
-    return NextResponse.json({ success: true });
-  } catch (error) {
-    logger.error({ err: error }, "API Library Cache Invalidation - Erreur:");
-    if (error instanceof AppError) {
-      return NextResponse.json(
-        {
-          error: {
-            code: error.code,
-            name: "Cache invalidation error",
-            message: getErrorMessage(error.code),
-          },
-        },
-        { status: 500 }
-      );
-    }
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.DELETE_ERROR,
-          name: "Cache invalidation error",
-          message: getErrorMessage(ERROR_CODES.CACHE.DELETE_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/series/[seriesId]/books/route.ts b/src/app/api/komga/series/[seriesId]/books/route.ts
index 13b7a61..36b016a 100644
--- a/src/app/api/komga/series/[seriesId]/books/route.ts
+++ b/src/app/api/komga/series/[seriesId]/books/route.ts
@@ -52,43 +52,3 @@ export async function GET(
     );
   }
 }
-
-export async function DELETE(
-  request: NextRequest,
-  { params }: { params: Promise<{ seriesId: string }> }
-) {
-  try {
-    const seriesId: string = (await params).seriesId;
-
-    await Promise.all([
-      SeriesService.invalidateSeriesBooksCache(seriesId),
-      SeriesService.invalidateSeriesCache(seriesId),
-    ]);
-
-    return NextResponse.json({ success: true });
-  } catch (error) {
-    logger.error({ err: error }, "API Series Cache Invalidation - Erreur:");
-    if (error instanceof AppError) {
-      return NextResponse.json(
-        {
-          error: {
-            code: error.code,
-            name: "Cache invalidation error",
-            message: getErrorMessage(error.code),
-          },
-        },
-        { status: 500 }
-      );
-    }
-    return NextResponse.json(
-      {
-        error: {
-          code: ERROR_CODES.CACHE.DELETE_ERROR,
-          name: "Cache invalidation error",
-          message: getErrorMessage(ERROR_CODES.CACHE.DELETE_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/api/komga/ttl-config/route.ts b/src/app/api/komga/ttl-config/route.ts
deleted file mode 100644
index 150eab2..0000000
--- a/src/app/api/komga/ttl-config/route.ts
+++ /dev/null
@@ -1,87 +0,0 @@
-import { NextResponse } from "next/server";
-import { ConfigDBService } from "@/lib/services/config-db.service";
-import { ERROR_CODES } from "@/constants/errorCodes";
-import type { TTLConfig } from "@/types/komga";
-import { getErrorMessage } from "@/utils/errors";
-import type { NextRequest } from "next/server";
-import logger from "@/lib/logger";
-
-export async function GET() {
-  try {
-    const config: TTLConfig | null = await ConfigDBService.getTTLConfig();
-    return NextResponse.json(config);
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la récupération de la configuration TTL");
-    if (error instanceof Error) {
-      if (error.message === getErrorMessage(ERROR_CODES.MIDDLEWARE.UNAUTHORIZED)) {
-        return NextResponse.json(
-          {
-            error: {
-              name: "Unauthorized",
-              code: ERROR_CODES.MIDDLEWARE.UNAUTHORIZED,
-              message: getErrorMessage(ERROR_CODES.MIDDLEWARE.UNAUTHORIZED),
-            },
-          },
-          { status: 401 }
-        );
-      }
-    }
-    return NextResponse.json(
-      {
-        error: {
-          name: "TTL fetch error",
-          code: ERROR_CODES.CONFIG.TTL_FETCH_ERROR,
-          message: getErrorMessage(ERROR_CODES.CONFIG.TTL_FETCH_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
-
-export async function POST(request: NextRequest) {
-  try {
-    const data = await request.json();
-    const config: TTLConfig = await ConfigDBService.saveTTLConfig(data);
-
-    return NextResponse.json({
-      message: "⏱️ Configuration TTL sauvegardée avec succès",
-      config: {
-        defaultTTL: config.defaultTTL,
-        homeTTL: config.homeTTL,
-        librariesTTL: config.librariesTTL,
-        seriesTTL: config.seriesTTL,
-        booksTTL: config.booksTTL,
-        imagesTTL: config.imagesTTL,
-        imageCacheMaxAge: config.imageCacheMaxAge,
-      },
-    });
-  } catch (error) {
-    logger.error({ err: error }, "Erreur lors de la sauvegarde de la configuration TTL");
-    if (
-      error instanceof Error &&
-      error.message === getErrorMessage(ERROR_CODES.MIDDLEWARE.UNAUTHORIZED)
-    ) {
-      return NextResponse.json(
-        {
-          error: {
-            name: "Unauthorized",
-            code: ERROR_CODES.MIDDLEWARE.UNAUTHORIZED,
-            message: getErrorMessage(ERROR_CODES.MIDDLEWARE.UNAUTHORIZED),
-          },
-        },
-        { status: 401 }
-      );
-    }
-    return NextResponse.json(
-      {
-        error: {
-          name: "TTL save error",
-          code: ERROR_CODES.CONFIG.TTL_SAVE_ERROR,
-          message: getErrorMessage(ERROR_CODES.CONFIG.TTL_SAVE_ERROR),
-        },
-      },
-      { status: 500 }
-    );
-  }
-}
diff --git a/src/app/libraries/[libraryId]/ClientLibraryPage.tsx b/src/app/libraries/[libraryId]/ClientLibraryPage.tsx
index c0c59f3..0d83666 100644
--- a/src/app/libraries/[libraryId]/ClientLibraryPage.tsx
+++ b/src/app/libraries/[libraryId]/ClientLibraryPage.tsx
@@ -59,9 +59,7 @@ export function ClientLibraryPage({
           params.append("search", search);
         }
 
-        const response = await fetch(`/api/komga/libraries/${libraryId}/series?${params}`, {
-          cache: "default", // Utilise le cache HTTP du navigateur
-        });
+        const response = await fetch(`/api/komga/libraries/${libraryId}/series?${params}`);
 
         if (!response.ok) {
           const errorData = await response.json();
@@ -84,16 +82,6 @@ export function ClientLibraryPage({
 
   const handleRefresh = async (libraryId: string) => {
     try {
-      // Invalidate cache via API
-      const cacheResponse = await fetch(`/api/komga/libraries/${libraryId}/series`, {
-        method: "DELETE",
-      });
-
-      if (!cacheResponse.ok) {
-        throw new Error("Error invalidating cache");
-      }
-
-      // Recharger les données
       const params = new URLSearchParams({
         page: String(currentPage - 1),
         size: String(effectivePageSize),
@@ -105,7 +93,7 @@ export function ClientLibraryPage({
       }
 
       const response = await fetch(`/api/komga/libraries/${libraryId}/series?${params}`, {
-        cache: "reload", // Force un nouveau fetch après invalidation
+        cache: "reload",
       });
 
       if (!response.ok) {
@@ -139,7 +127,7 @@ export function ClientLibraryPage({
       }
 
       const response = await fetch(`/api/komga/libraries/${libraryId}/series?${params}`, {
-        cache: "reload", // Force un nouveau fetch lors du retry
+        cache: "reload",
       });
 
       if (!response.ok) {
diff --git a/src/app/series/[seriesId]/ClientSeriesPage.tsx b/src/app/series/[seriesId]/ClientSeriesPage.tsx
index e528c21..91bf326 100644
--- a/src/app/series/[seriesId]/ClientSeriesPage.tsx
+++ b/src/app/series/[seriesId]/ClientSeriesPage.tsx
@@ -49,9 +49,7 @@ export function ClientSeriesPage({
           unread: String(unreadOnly),
         });
 
-        const response = await fetch(`/api/komga/series/${seriesId}/books?${params}`, {
-          cache: "default", // Utilise le cache HTTP du navigateur
-        });
+        const response = await fetch(`/api/komga/series/${seriesId}/books?${params}`);
 
         if (!response.ok) {
           const errorData = await response.json();
@@ -74,16 +72,6 @@ export function ClientSeriesPage({
 
   const handleRefresh = async (seriesId: string) => {
     try {
-      // Invalidate cache via API
-      const cacheResponse = await fetch(`/api/komga/series/${seriesId}/books`, {
-        method: "DELETE",
-      });
-
-      if (!cacheResponse.ok) {
-        throw new Error("Erreur lors de l'invalidation du cache");
-      }
-
-      // Recharger les données
       const params = new URLSearchParams({
         page: String(currentPage - 1),
         size: String(effectivePageSize),
@@ -91,7 +79,7 @@ export function ClientSeriesPage({
       });
 
       const response = await fetch(`/api/komga/series/${seriesId}/books?${params}`, {
-        cache: "reload", // Force un nouveau fetch après invalidation
+        cache: "reload",
       });
 
       if (!response.ok) {
@@ -121,7 +109,7 @@ export function ClientSeriesPage({
       });
 
       const response = await fetch(`/api/komga/series/${seriesId}/books?${params}`, {
-        cache: "reload", // Force un nouveau fetch lors du retry
+        cache: "reload",
       });
 
       if (!response.ok) {
diff --git a/src/app/settings/page.tsx b/src/app/settings/page.tsx
index 6a76475..72def25 100644
--- a/src/app/settings/page.tsx
+++ b/src/app/settings/page.tsx
@@ -1,7 +1,7 @@
 import { ConfigDBService } from "@/lib/services/config-db.service";
 import { ClientSettings } from "@/components/settings/ClientSettings";
 import type { Metadata } from "next";
-import type { KomgaConfig, TTLConfig } from "@/types/komga";
+import type { KomgaConfig } from "@/types/komga";
 import logger from "@/lib/logger";
 
 export const dynamic = "force-dynamic";
@@ -13,7 +13,6 @@ export const metadata: Metadata = {
 
 export default async function SettingsPage() {
   let config: KomgaConfig | null = null;
-  let ttlConfig: TTLConfig | null = null;
 
   try {
     // Récupérer la configuration Komga
@@ -27,13 +26,10 @@ export default async function SettingsPage() {
         password: null,
       };
     }
-
-    // Récupérer la configuration TTL
-    ttlConfig = await ConfigDBService.getTTLConfig();
   } catch (error) {
     logger.error({ err: error }, "Erreur lors de la récupération de la configuration:");
     // On ne fait rien si la config n'existe pas, on laissera le composant client gérer l'état initial
   }
 
-  return <ClientSettings initialConfig={config} initialTTLConfig={ttlConfig} />;
+  return <ClientSettings initialConfig={config} />;
 }
diff --git a/src/components/home/ClientHomePage.tsx b/src/components/home/ClientHomePage.tsx
index a69962b..2e270f4 100644
--- a/src/components/home/ClientHomePage.tsx
+++ b/src/components/home/ClientHomePage.tsx
@@ -22,9 +22,7 @@ export function ClientHomePage() {
     setError(null);
 
     try {
-      const response = await fetch("/api/komga/home", {
-        cache: "default", // Utilise le cache HTTP du navigateur
-      });
+      const response = await fetch("/api/komga/home");
 
       if (!response.ok) {
         const errorData = await response.json();
@@ -56,18 +54,8 @@ export function ClientHomePage() {
 
   const handleRefresh = async () => {
     try {
-      // Invalider le cache via l'API
-      const deleteResponse = await fetch("/api/komga/home", {
-        method: "DELETE",
-      });
-
-      if (!deleteResponse.ok) {
-        throw new Error("Erreur lors de l'invalidation du cache");
-      }
-
-      // Récupérer les nouvelles données
       const response = await fetch("/api/komga/home", {
-        cache: "reload", // Force un nouveau fetch après invalidation
+        cache: "reload",
       });
 
       if (!response.ok) {
diff --git a/src/components/layout/ClientLayout.tsx b/src/components/layout/ClientLayout.tsx
index 1471946..65d6208 100644
--- a/src/components/layout/ClientLayout.tsx
+++ b/src/components/layout/ClientLayout.tsx
@@ -10,7 +10,6 @@ import { usePathname } from "next/navigation";
 import { registerServiceWorker } from "@/lib/registerSW";
 import { NetworkStatus } from "../ui/NetworkStatus";
 import { usePreferences } from "@/contexts/PreferencesContext";
-import { ImageCacheProvider } from "@/contexts/ImageCacheContext";
 import type { KomgaLibrary, KomgaSeries } from "@/types/komga";
 import logger from "@/lib/logger";
 
@@ -152,39 +151,37 @@ export default function ClientLayout({
 
   return (
     <ThemeProvider attribute="class" defaultTheme="system" enableSystem>
-      <ImageCacheProvider>
-        {/* Background fixe pour les images et gradients */}
-        {hasCustomBackground && <div className="fixed inset-0 -z-10" style={backgroundStyle} />}
-        <div
-          className={`relative min-h-screen ${hasCustomBackground ? "" : "bg-background"}`}
-          style={
-            hasCustomBackground
-              ? { backgroundColor: `rgba(var(--background-rgb, 255, 255, 255), ${contentOpacity})` }
-              : undefined
-          }
-        >
-          {!isPublicRoute && (
-            <Header
-              onToggleSidebar={handleToggleSidebar}
-              onRefreshBackground={fetchRandomBook}
-              showRefreshBackground={preferences.background.type === "komga-random"}
-            />
-          )}
-          {!isPublicRoute && (
-            <Sidebar
-              isOpen={isSidebarOpen}
-              onClose={handleCloseSidebar}
-              initialLibraries={initialLibraries}
-              initialFavorites={initialFavorites}
-              userIsAdmin={userIsAdmin}
-            />
-          )}
-          <main className={!isPublicRoute ? "pt-safe" : ""}>{children}</main>
-          <InstallPWA />
-          <Toaster />
-          <NetworkStatus />
-        </div>
-      </ImageCacheProvider>
+      {/* Background fixe pour les images et gradients */}
+      {hasCustomBackground && <div className="fixed inset-0 -z-10" style={backgroundStyle} />}
+      <div
+        className={`relative min-h-screen ${hasCustomBackground ? "" : "bg-background"}`}
+        style={
+          hasCustomBackground
+            ? { backgroundColor: `rgba(var(--background-rgb, 255, 255, 255), ${contentOpacity})` }
+            : undefined
+        }
+      >
+        {!isPublicRoute && (
+          <Header
+            onToggleSidebar={handleToggleSidebar}
+            onRefreshBackground={fetchRandomBook}
+            showRefreshBackground={preferences.background.type === "komga-random"}
+          />
+        )}
+        {!isPublicRoute && (
+          <Sidebar
+            isOpen={isSidebarOpen}
+            onClose={handleCloseSidebar}
+            initialLibraries={initialLibraries}
+            initialFavorites={initialFavorites}
+            userIsAdmin={userIsAdmin}
+          />
+        )}
+        <main className={!isPublicRoute ? "pt-safe" : ""}>{children}</main>
+        <InstallPWA />
+        <Toaster />
+        <NetworkStatus />
+      </div>
     </ThemeProvider>
   );
 }
diff --git a/src/components/reader/PhotoswipeReader.tsx b/src/components/reader/PhotoswipeReader.tsx
index 01dcc82..15ce8f7 100644
--- a/src/components/reader/PhotoswipeReader.tsx
+++ b/src/components/reader/PhotoswipeReader.tsx
@@ -75,8 +75,6 @@ export function PhotoswipeReader({ book, pages, onClose, nextBook }: BookReaderP
   }, []);
 
   // Prefetch current and next pages
-  // Deduplication in useImageLoader prevents redundant requests
-  // Server queue (RequestQueueService) handles concurrency limits
   useEffect(() => {
     // Prefetch pages starting from current page
     prefetchPages(currentPage, prefetchCount);
diff --git a/src/components/reader/hooks/useImageLoader.ts b/src/components/reader/hooks/useImageLoader.ts
index 6f7dcab..e5cd2f1 100644
--- a/src/components/reader/hooks/useImageLoader.ts
+++ b/src/components/reader/hooks/useImageLoader.ts
@@ -99,8 +99,6 @@ export function useImageLoader({
   );
 
   // Prefetch multiple pages starting from a given page
-  // The server-side queue (RequestQueueService) handles concurrency limits
-  // We only deduplicate to avoid redundant HTTP requests
   const prefetchPages = useCallback(
     async (startPage: number, count: number = prefetchCount) => {
       const pagesToPrefetch = [];
diff --git a/src/components/settings/AdvancedSettings.tsx b/src/components/settings/AdvancedSettings.tsx
index 0f5f335..7b4ce83 100644
--- a/src/components/settings/AdvancedSettings.tsx
+++ b/src/components/settings/AdvancedSettings.tsx
@@ -2,7 +2,7 @@ import { useTranslate } from "@/hooks/useTranslate";
 import { usePreferences } from "@/contexts/PreferencesContext";
 import { useToast } from "@/components/ui/use-toast";
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
-import { Activity, Shield } from "lucide-react";
+import { Activity } from "lucide-react";
 import { SliderControl } from "@/components/ui/slider-control";
 import logger from "@/lib/logger";
 
@@ -11,25 +11,6 @@ export function AdvancedSettings() {
   const { toast } = useToast();
   const { preferences, updatePreferences } = usePreferences();
 
-  const handleMaxConcurrentChange = async (value: number) => {
-    try {
-      await updatePreferences({
-        komgaMaxConcurrentRequests: value,
-      });
-      toast({
-        title: t("settings.title"),
-        description: t("settings.komga.messages.configSaved"),
-      });
-    } catch (error) {
-      logger.error({ err: error }, "Erreur:");
-      toast({
-        variant: "destructive",
-        title: t("settings.error.title"),
-        description: t("settings.error.message"),
-      });
-    }
-  };
-
   const handlePrefetchChange = async (value: number) => {
     try {
       await updatePreferences({
@@ -49,28 +30,6 @@ export function AdvancedSettings() {
     }
   };
 
-  const handleCircuitBreakerChange = async (field: string, value: number) => {
-    try {
-      await updatePreferences({
-        circuitBreakerConfig: {
-          ...preferences.circuitBreakerConfig,
-          [field]: value,
-        },
-      });
-      toast({
-        title: t("settings.title"),
-        description: t("settings.komga.messages.configSaved"),
-      });
-    } catch (error) {
-      logger.error({ err: error }, "Erreur:");
-      toast({
-        variant: "destructive",
-        title: t("settings.error.title"),
-        description: t("settings.error.message"),
-      });
-    }
-  };
-
   return (
     <div className="space-y-6">
       {/* Performance Settings */}
@@ -85,18 +44,6 @@ export function AdvancedSettings() {
           </CardDescription>
         </CardHeader>
         <CardContent className="space-y-6">
-          <SliderControl
-            label={t("settings.advanced.maxConcurrentRequests.label")}
-            value={preferences.komgaMaxConcurrentRequests}
-            min={1}
-            max={10}
-            step={1}
-            description={t("settings.advanced.maxConcurrentRequests.description")}
-            onChange={handleMaxConcurrentChange}
-          />
-
-          <div className="border-t" />
-
           <SliderControl
             label={t("settings.advanced.prefetchCount.label")}
             value={preferences.readerPrefetchCount}
@@ -108,54 +55,6 @@ export function AdvancedSettings() {
           />
         </CardContent>
       </Card>
-
-      {/* Circuit Breaker Configuration */}
-      <Card>
-        <CardHeader>
-          <div className="flex items-center gap-2">
-            <Shield className="h-5 w-5 text-primary" />
-            <CardTitle className="text-lg">{t("settings.advanced.circuitBreaker.title")}</CardTitle>
-          </div>
-          <CardDescription>{t("settings.advanced.circuitBreaker.description")}</CardDescription>
-        </CardHeader>
-        <CardContent className="space-y-6">
-          <SliderControl
-            label={t("settings.advanced.circuitBreaker.threshold.label")}
-            value={preferences.circuitBreakerConfig.threshold ?? 5}
-            min={1}
-            max={20}
-            step={1}
-            description={t("settings.advanced.circuitBreaker.threshold.description")}
-            onChange={(value) => handleCircuitBreakerChange("threshold", value)}
-          />
-
-          <div className="border-t" />
-
-          <SliderControl
-            label={t("settings.advanced.circuitBreaker.timeout.label")}
-            value={preferences.circuitBreakerConfig.timeout ?? 30000}
-            min={1000}
-            max={120000}
-            step={1000}
-            description={t("settings.advanced.circuitBreaker.timeout.description")}
-            onChange={(value) => handleCircuitBreakerChange("timeout", value)}
-            formatValue={(value) => `${value / 1000}s`}
-          />
-
-          <div className="border-t" />
-
-          <SliderControl
-            label={t("settings.advanced.circuitBreaker.resetTimeout.label")}
-            value={preferences.circuitBreakerConfig.resetTimeout ?? 60000}
-            min={10000}
-            max={600000}
-            step={1000}
-            description={t("settings.advanced.circuitBreaker.resetTimeout.description")}
-            onChange={(value) => handleCircuitBreakerChange("resetTimeout", value)}
-            formatValue={(value) => `${value / 1000}s`}
-          />
-        </CardContent>
-      </Card>
     </div>
   );
 }
diff --git a/src/components/settings/CacheModeSwitch.tsx b/src/components/settings/CacheModeSwitch.tsx
deleted file mode 100644
index 76af928..0000000
--- a/src/components/settings/CacheModeSwitch.tsx
+++ /dev/null
@@ -1,61 +0,0 @@
-"use client";
-
-import { useState } from "react";
-import { Label } from "@/components/ui/label";
-import { Switch } from "@/components/ui/switch";
-import { useToast } from "@/components/ui/use-toast";
-import { usePreferences } from "@/contexts/PreferencesContext";
-import logger from "@/lib/logger";
-
-export function CacheModeSwitch() {
-  const [isLoading, setIsLoading] = useState(false);
-  const { toast } = useToast();
-  const { preferences, updatePreferences } = usePreferences();
-
-  const handleToggle = async (checked: boolean) => {
-    setIsLoading(true);
-    try {
-      // Mettre à jour les préférences
-      await updatePreferences({ cacheMode: checked ? "memory" : "file" });
-
-      // Mettre à jour le mode de cache côté serveur
-      const res = await fetch("/api/komga/cache/mode", {
-        method: "POST",
-        headers: {
-          "Content-Type": "application/json",
-        },
-        body: JSON.stringify({ mode: checked ? "memory" : "file" }),
-      });
-
-      if (!res.ok) throw new Error();
-
-      toast({
-        title: "Mode de cache modifié",
-        description: `Le cache est maintenant en mode ${checked ? "mémoire" : "fichier"}`,
-      });
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la modification du mode de cache:");
-      toast({
-        variant: "destructive",
-        title: "Erreur",
-        description: "Impossible de modifier le mode de cache",
-      });
-    } finally {
-      setIsLoading(false);
-    }
-  };
-
-  return (
-    <div className="flex items-center space-x-2">
-      <Switch
-        id="cache-mode"
-        checked={preferences.cacheMode === "memory"}
-        onCheckedChange={handleToggle}
-        disabled={isLoading}
-      />
-      <Label htmlFor="cache-mode" className="text-sm text-muted-foreground">
-        Cache en mémoire {isLoading && "(chargement...)"}
-      </Label>
-    </div>
-  );
-}
diff --git a/src/components/settings/CacheSettings.tsx b/src/components/settings/CacheSettings.tsx
deleted file mode 100644
index bfd908f..0000000
--- a/src/components/settings/CacheSettings.tsx
+++ /dev/null
@@ -1,938 +0,0 @@
-"use client";
-
-import { useState, useEffect } from "react";
-import { useTranslate } from "@/hooks/useTranslate";
-import { useToast } from "@/components/ui/use-toast";
-import { Trash2, Loader2, HardDrive, List, ChevronDown, ChevronUp, ImageOff } from "lucide-react";
-import { CacheModeSwitch } from "@/components/settings/CacheModeSwitch";
-import { Label } from "@/components/ui/label";
-import type { TTLConfigData } from "@/types/komga";
-import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
-import { Button } from "@/components/ui/button";
-import { useImageCache } from "@/contexts/ImageCacheContext";
-import logger from "@/lib/logger";
-
-interface CacheSettingsProps {
-  initialTTLConfig: TTLConfigData | null;
-}
-
-interface CacheSizeInfo {
-  sizeInBytes: number;
-  itemCount: number;
-}
-
-interface CacheEntry {
-  key: string;
-  size: number;
-  expiry: number;
-  isExpired: boolean;
-}
-
-interface ServiceWorkerCacheEntry {
-  url: string;
-  size: number;
-  cacheName: string;
-}
-
-export function CacheSettings({ initialTTLConfig }: CacheSettingsProps) {
-  const { t } = useTranslate();
-  const { toast } = useToast();
-  const { flushImageCache } = useImageCache();
-  const [isCacheClearing, setIsCacheClearing] = useState(false);
-  const [isServiceWorkerClearing, setIsServiceWorkerClearing] = useState(false);
-  const [serverCacheSize, setServerCacheSize] = useState<CacheSizeInfo | null>(null);
-  const [swCacheSize, setSwCacheSize] = useState<number | null>(null);
-  const [apiCacheSize, setApiCacheSize] = useState<number | null>(null);
-  const [isLoadingCacheSize, setIsLoadingCacheSize] = useState(true);
-  const [cacheEntries, setCacheEntries] = useState<CacheEntry[]>([]);
-  const [isLoadingEntries, setIsLoadingEntries] = useState(false);
-  const [showEntries, setShowEntries] = useState(false);
-  const [swCacheEntries, setSwCacheEntries] = useState<ServiceWorkerCacheEntry[]>([]);
-  const [isLoadingSwEntries, setIsLoadingSwEntries] = useState(false);
-  const [showSwEntries, setShowSwEntries] = useState(false);
-  const [expandedGroups, setExpandedGroups] = useState<Record<string, boolean>>({});
-  const [expandedVersions, setExpandedVersions] = useState<Record<string, boolean>>({});
-  const [ttlConfig, setTTLConfig] = useState<TTLConfigData>(
-    initialTTLConfig || {
-      defaultTTL: 5,
-      homeTTL: 5,
-      librariesTTL: 1440,
-      seriesTTL: 5,
-      booksTTL: 5,
-      imagesTTL: 1440,
-      imageCacheMaxAge: 2592000,
-    }
-  );
-
-  const formatBytes = (bytes: number): string => {
-    if (bytes === 0) return "0 B";
-    const k = 1024;
-    const sizes = ["B", "KB", "MB", "GB"];
-    const i = Math.floor(Math.log(bytes) / Math.log(k));
-    return `${(bytes / Math.pow(k, i)).toFixed(2)} ${sizes[i]}`;
-  };
-
-  const formatDate = (timestamp: number): string => {
-    return new Date(timestamp).toLocaleString();
-  };
-
-  const getTimeRemaining = (expiry: number): string => {
-    const now = Date.now();
-    const diff = expiry - now;
-
-    if (diff < 0) return t("settings.cache.entries.expired");
-
-    const minutes = Math.floor(diff / 60000);
-    const hours = Math.floor(minutes / 60);
-    const days = Math.floor(hours / 24);
-
-    if (days > 0) return t("settings.cache.entries.daysRemaining", { count: days });
-    if (hours > 0) return t("settings.cache.entries.hoursRemaining", { count: hours });
-    if (minutes > 0) return t("settings.cache.entries.minutesRemaining", { count: minutes });
-    return t("settings.cache.entries.lessThanMinute");
-  };
-
-  const getCacheType = (key: string): string => {
-    if (key.includes("/home")) return "HOME";
-    if (key.includes("/libraries")) return "LIBRARIES";
-    if (key.includes("/series/")) return "SERIES";
-    if (key.includes("/books/")) return "BOOKS";
-    if (key.includes("/images/")) return "IMAGES";
-    return "DEFAULT";
-  };
-
-  const fetchCacheSize = async () => {
-    setIsLoadingCacheSize(true);
-    try {
-      // Récupérer la taille du cache serveur
-      const serverResponse = await fetch("/api/komga/cache/size");
-      if (serverResponse.ok) {
-        const serverData = await serverResponse.json();
-        setServerCacheSize({
-          sizeInBytes: serverData.sizeInBytes,
-          itemCount: serverData.itemCount,
-        });
-      }
-
-      // Calculer la taille du cache Service Worker
-      if ("caches" in window) {
-        const cacheNames = await caches.keys();
-        let totalSize = 0;
-        let apiSize = 0;
-
-        for (const cacheName of cacheNames) {
-          const cache = await caches.open(cacheName);
-          const requests = await cache.keys();
-
-          for (const request of requests) {
-            const response = await cache.match(request);
-            if (response) {
-              const blob = await response.clone().blob();
-              totalSize += blob.size;
-
-              // Calculer la taille du cache API séparément
-              if (cacheName.includes("api")) {
-                apiSize += blob.size;
-              }
-            }
-          }
-        }
-
-        setSwCacheSize(totalSize);
-        setApiCacheSize(apiSize);
-      }
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la récupération de la taille du cache:");
-    } finally {
-      setIsLoadingCacheSize(false);
-    }
-  };
-
-  const fetchCacheEntries = async () => {
-    setIsLoadingEntries(true);
-    try {
-      const response = await fetch("/api/komga/cache/entries");
-      if (response.ok) {
-        const data = await response.json();
-        setCacheEntries(data.entries);
-      }
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la récupération des entrées du cache:");
-    } finally {
-      setIsLoadingEntries(false);
-    }
-  };
-
-  const toggleShowEntries = () => {
-    if (!showEntries && cacheEntries.length === 0) {
-      fetchCacheEntries();
-    }
-    setShowEntries(!showEntries);
-  };
-
-  const fetchSwCacheEntries = async () => {
-    setIsLoadingSwEntries(true);
-    try {
-      if ("caches" in window) {
-        const entries: ServiceWorkerCacheEntry[] = [];
-        const cacheNames = await caches.keys();
-
-        for (const cacheName of cacheNames) {
-          const cache = await caches.open(cacheName);
-          const requests = await cache.keys();
-
-          for (const request of requests) {
-            const response = await cache.match(request);
-            if (response) {
-              const blob = await response.clone().blob();
-              entries.push({
-                url: request.url,
-                size: blob.size,
-                cacheName,
-              });
-            }
-          }
-        }
-
-        setSwCacheEntries(entries);
-      }
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la récupération des entrées du cache SW:");
-    } finally {
-      setIsLoadingSwEntries(false);
-    }
-  };
-
-  const toggleShowSwEntries = () => {
-    if (!showSwEntries && swCacheEntries.length === 0) {
-      fetchSwCacheEntries();
-    }
-    setShowSwEntries(!showSwEntries);
-  };
-
-  const getPathGroup = (url: string): string => {
-    try {
-      const urlObj = new URL(url);
-      const path = urlObj.pathname;
-      const segments = path.split("/").filter(Boolean);
-
-      if (segments.length === 0) return "/";
-
-      // Pour /api/komga/images, grouper par type (series/books)
-      if (
-        segments[0] === "api" &&
-        segments[1] === "komga" &&
-        segments[2] === "images" &&
-        segments[3]
-      ) {
-        return `/${segments[0]}/${segments[1]}/${segments[2]}/${segments[3]}`;
-      }
-
-      // Pour les autres, garder juste le premier segment
-      return `/${segments[0]}`;
-    } catch {
-      return "Autres";
-    }
-  };
-
-  const getBaseUrl = (url: string): string => {
-    try {
-      const urlObj = new URL(url);
-      return urlObj.pathname;
-    } catch {
-      return url;
-    }
-  };
-
-  const groupVersions = (entries: ServiceWorkerCacheEntry[]) => {
-    const grouped = entries.reduce(
-      (acc, entry) => {
-        const baseUrl = getBaseUrl(entry.url);
-        if (!acc[baseUrl]) {
-          acc[baseUrl] = [];
-        }
-        acc[baseUrl].push(entry);
-        return acc;
-      },
-      {} as Record<string, ServiceWorkerCacheEntry[]>
-    );
-
-    // Trier par date (le plus récent en premier) basé sur le paramètre v
-    Object.keys(grouped).forEach((key) => {
-      grouped[key].sort((a, b) => {
-        const aVersion = new URL(a.url).searchParams.get("v") || "0";
-        const bVersion = new URL(b.url).searchParams.get("v") || "0";
-        return Number(bVersion) - Number(aVersion);
-      });
-    });
-
-    return grouped;
-  };
-
-  const groupEntriesByPath = (entries: ServiceWorkerCacheEntry[]) => {
-    const grouped = entries.reduce(
-      (acc, entry) => {
-        const pathGroup = getPathGroup(entry.url);
-        if (!acc[pathGroup]) {
-          acc[pathGroup] = [];
-        }
-        acc[pathGroup].push(entry);
-        return acc;
-      },
-      {} as Record<string, ServiceWorkerCacheEntry[]>
-    );
-
-    // Trier chaque groupe par taille décroissante
-    Object.keys(grouped).forEach((key) => {
-      grouped[key].sort((a, b) => b.size - a.size);
-    });
-
-    // Trier les groupes par taille totale décroissante
-    const sortedGroups: Record<string, ServiceWorkerCacheEntry[]> = {};
-    Object.entries(grouped)
-      .sort((a, b) => {
-        const aSize = getTotalSizeByType(a[1]);
-        const bSize = getTotalSizeByType(b[1]);
-        return bSize - aSize;
-      })
-      .forEach(([key, value]) => {
-        sortedGroups[key] = value;
-      });
-
-    return sortedGroups;
-  };
-
-  const getTotalSizeByType = (entries: ServiceWorkerCacheEntry[]): number => {
-    return entries.reduce((sum, entry) => sum + entry.size, 0);
-  };
-
-  const toggleGroup = (groupName: string) => {
-    setExpandedGroups((prev) => ({
-      ...prev,
-      [groupName]: !prev[groupName],
-    }));
-  };
-
-  const toggleVersions = (fileName: string) => {
-    setExpandedVersions((prev) => ({
-      ...prev,
-      [fileName]: !prev[fileName],
-    }));
-  };
-
-  useEffect(() => {
-    fetchCacheSize();
-  }, []);
-
-  const handleClearCache = async () => {
-    setIsCacheClearing(true);
-
-    try {
-      const response = await fetch("/api/komga/cache/clear", {
-        method: "POST",
-      });
-
-      if (!response.ok) {
-        const data = await response.json();
-        throw new Error(data.error || t("settings.cache.error.message"));
-      }
-
-      toast({
-        title: t("settings.cache.title"),
-        description: t("settings.cache.messages.cleared"),
-      });
-
-      // Rafraîchir la taille du cache et les entrées
-      await fetchCacheSize();
-      if (showEntries) {
-        await fetchCacheEntries();
-      }
-      if (showSwEntries) {
-        await fetchSwCacheEntries();
-      }
-    } catch (error) {
-      logger.error({ err: error }, "Erreur:");
-      toast({
-        variant: "destructive",
-        title: t("settings.cache.error.title"),
-        description: t("settings.cache.error.message"),
-      });
-    } finally {
-      setIsCacheClearing(false);
-    }
-  };
-
-  const handleClearServiceWorkerCache = async () => {
-    setIsServiceWorkerClearing(true);
-    try {
-      if ("serviceWorker" in navigator && "caches" in window) {
-        const cacheNames = await caches.keys();
-        await Promise.all(cacheNames.map((cacheName) => caches.delete(cacheName)));
-
-        // Forcer la mise à jour du service worker
-        const registrations = await navigator.serviceWorker.getRegistrations();
-        for (const registration of registrations) {
-          await registration.unregister();
-        }
-
-        toast({
-          title: t("settings.cache.title"),
-          description: t("settings.cache.messages.serviceWorkerCleared"),
-        });
-
-        // Rafraîchir la taille du cache et les entrées
-        await fetchCacheSize();
-        if (showEntries) {
-          await fetchCacheEntries();
-        }
-        if (showSwEntries) {
-          await fetchSwCacheEntries();
-        }
-
-        // Recharger la page après 1 seconde pour réenregistrer le SW
-        setTimeout(() => {
-          window.location.reload();
-        }, 1000);
-      }
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la suppression des caches:");
-      toast({
-        variant: "destructive",
-        title: t("settings.cache.error.title"),
-        description: t("settings.cache.error.serviceWorkerMessage"),
-      });
-    } finally {
-      setIsServiceWorkerClearing(false);
-    }
-  };
-
-  const handleFlushImageCache = () => {
-    flushImageCache();
-    toast({
-      title: t("settings.cache.title"),
-      description: t("settings.cache.messages.imageCacheFlushed"),
-    });
-  };
-
-  const handleTTLChange = (event: React.ChangeEvent<HTMLInputElement | HTMLSelectElement>) => {
-    const { name, value } = event.target;
-    setTTLConfig((prev) => ({
-      ...prev,
-      [name]: parseInt(value || "0", 10),
-    }));
-  };
-
-  const handleSaveTTL = async (event: React.FormEvent<HTMLFormElement>) => {
-    event.preventDefault();
-
-    try {
-      const response = await fetch("/api/komga/ttl-config", {
-        method: "POST",
-        headers: {
-          "Content-Type": "application/json",
-        },
-        body: JSON.stringify(ttlConfig),
-      });
-
-      if (!response.ok) {
-        const data = await response.json();
-        throw new Error(data.error || t("settings.cache.error.message"));
-      }
-
-      toast({
-        title: t("settings.cache.title"),
-        description: t("settings.cache.messages.ttlSaved"),
-      });
-    } catch (error) {
-      logger.error({ err: error }, "Erreur lors de la sauvegarde:");
-      toast({
-        variant: "destructive",
-        title: t("settings.cache.error.title"),
-        description: t("settings.cache.error.messagettl"),
-      });
-    }
-  };
-
-  return (
-    <Card>
-      <CardHeader>
-        <CardTitle className="flex items-center gap-2">
-          <Trash2 className="h-5 w-5" />
-          {t("settings.cache.title")}
-        </CardTitle>
-        <CardDescription>{t("settings.cache.description")}</CardDescription>
-      </CardHeader>
-      <CardContent className="space-y-4">
-        <div className="flex items-center justify-between mb-4">
-          <div className="space-y-0.5">
-            <Label htmlFor="cache-mode">{t("settings.cache.mode.label")}</Label>
-            <p className="text-sm text-muted-foreground">{t("settings.cache.mode.description")}</p>
-          </div>
-          <CacheModeSwitch />
-        </div>
-
-        {/* Informations sur la taille du cache */}
-        <div className="rounded-md border bg-muted/50 backdrop-blur-md p-4 space-y-3">
-          <div className="flex items-center gap-2 font-medium">
-            <HardDrive className="h-4 w-4" />
-            {t("settings.cache.size.title")}
-          </div>
-
-          {isLoadingCacheSize ? (
-            <div className="text-sm text-muted-foreground">{t("settings.cache.size.loading")}</div>
-          ) : (
-            <div className="grid gap-2 sm:grid-cols-3">
-              <div className="space-y-1">
-                <div className="text-sm font-medium">{t("settings.cache.size.server")}</div>
-                {serverCacheSize ? (
-                  <div className="text-sm text-muted-foreground">
-                    <div>{formatBytes(serverCacheSize.sizeInBytes)}</div>
-                    <div className="text-xs">
-                      {t("settings.cache.size.items", { count: serverCacheSize.itemCount })}
-                    </div>
-                  </div>
-                ) : (
-                  <div className="text-sm text-muted-foreground">
-                    {t("settings.cache.size.error")}
-                  </div>
-                )}
-              </div>
-
-              <div className="space-y-1">
-                <div className="text-sm font-medium">{t("settings.cache.size.serviceWorker")}</div>
-                {swCacheSize !== null ? (
-                  <div className="text-sm text-muted-foreground">{formatBytes(swCacheSize)}</div>
-                ) : (
-                  <div className="text-sm text-muted-foreground">
-                    {t("settings.cache.size.error")}
-                  </div>
-                )}
-              </div>
-
-              <div className="space-y-1">
-                <div className="text-sm font-medium">{t("settings.cache.size.api")}</div>
-                {apiCacheSize !== null ? (
-                  <div className="text-sm text-muted-foreground">{formatBytes(apiCacheSize)}</div>
-                ) : (
-                  <div className="text-sm text-muted-foreground">
-                    {t("settings.cache.size.error")}
-                  </div>
-                )}
-              </div>
-            </div>
-          )}
-        </div>
-
-        {/* Aperçu des entrées du cache serveur */}
-        <div className="space-y-3">
-          <Button
-            type="button"
-            variant="outline"
-            onClick={toggleShowEntries}
-            className="w-full flex items-center justify-between"
-          >
-            <span className="flex items-center gap-2">
-              <List className="h-4 w-4" />
-              {t("settings.cache.entries.serverTitle")}
-            </span>
-            {showEntries ? <ChevronUp className="h-4 w-4" /> : <ChevronDown className="h-4 w-4" />}
-          </Button>
-
-          {showEntries && (
-            <div className="rounded-md border bg-muted/30 backdrop-blur-md">
-              {isLoadingEntries ? (
-                <div className="p-4 text-center text-sm text-muted-foreground">
-                  <Loader2 className="h-4 w-4 animate-spin mx-auto mb-2" />
-                  {t("settings.cache.entries.loading")}
-                </div>
-              ) : cacheEntries.length === 0 ? (
-                <div className="p-4 text-center text-sm text-muted-foreground">
-                  {t("settings.cache.entries.empty")}
-                </div>
-              ) : (
-                <div className="max-h-96 overflow-y-auto">
-                  <div className="divide-y">
-                    {cacheEntries.map((entry, index) => (
-                      <div
-                        key={index}
-                        className={`p-3 space-y-1 ${entry.isExpired ? "opacity-50" : ""}`}
-                      >
-                        <div className="flex items-start justify-between gap-2">
-                          <div className="flex-1 min-w-0">
-                            <div className="font-mono text-xs truncate" title={entry.key}>
-                              {entry.key}
-                            </div>
-                            <div className="flex items-center gap-2 mt-1 text-xs text-muted-foreground">
-                              <span className="inline-flex items-center rounded-full bg-primary/10 px-2 py-0.5 text-xs font-medium">
-                                {getCacheType(entry.key)}
-                              </span>
-                              <span>{formatBytes(entry.size)}</span>
-                            </div>
-                          </div>
-                          <div className="text-right text-xs">
-                            <div
-                              className={`font-medium ${entry.isExpired ? "text-destructive" : "text-muted-foreground"}`}
-                            >
-                              {getTimeRemaining(entry.expiry)}
-                            </div>
-                            <div
-                              className="text-muted-foreground/70"
-                              title={formatDate(entry.expiry)}
-                            >
-                              {new Date(entry.expiry).toLocaleDateString()}
-                            </div>
-                          </div>
-                        </div>
-                      </div>
-                    ))}
-                  </div>
-                </div>
-              )}
-            </div>
-          )}
-        </div>
-
-        {/* Aperçu des entrées du cache service worker */}
-        <div className="space-y-3">
-          <Button
-            type="button"
-            variant="outline"
-            onClick={toggleShowSwEntries}
-            className="w-full flex items-center justify-between"
-          >
-            <span className="flex items-center gap-2">
-              <List className="h-4 w-4" />
-              {t("settings.cache.entries.serviceWorkerTitle")}
-            </span>
-            {showSwEntries ? (
-              <ChevronUp className="h-4 w-4" />
-            ) : (
-              <ChevronDown className="h-4 w-4" />
-            )}
-          </Button>
-
-          {showSwEntries && (
-            <div className="rounded-md border bg-muted/30 backdrop-blur-md">
-              {isLoadingSwEntries ? (
-                <div className="p-4 text-center text-sm text-muted-foreground">
-                  <Loader2 className="h-4 w-4 animate-spin mx-auto mb-2" />
-                  {t("settings.cache.entries.loading")}
-                </div>
-              ) : swCacheEntries.length === 0 ? (
-                <div className="p-4 text-center text-sm text-muted-foreground">
-                  {t("settings.cache.entries.empty")}
-                </div>
-              ) : (
-                <div className="max-h-96 overflow-y-auto">
-                  {(() => {
-                    const grouped = groupEntriesByPath(swCacheEntries);
-                    return (
-                      <div className="divide-y">
-                        {Object.entries(grouped).map(([pathGroup, entries]) => {
-                          const isExpanded = expandedGroups[pathGroup];
-                          return (
-                            <div key={pathGroup} className="p-3 space-y-2">
-                              <button
-                                type="button"
-                                onClick={() => toggleGroup(pathGroup)}
-                                className="w-full flex items-center justify-between hover:bg-muted/50 rounded p-1 -m-1 transition-colors"
-                              >
-                                <div className="font-medium text-sm flex items-center gap-2">
-                                  {isExpanded ? (
-                                    <ChevronDown className="h-3 w-3" />
-                                  ) : (
-                                    <ChevronUp className="h-3 w-3" />
-                                  )}
-                                  <span className="inline-flex items-center rounded-full bg-blue-500/10 px-2 py-0.5 text-xs font-medium font-mono">
-                                    {pathGroup}
-                                  </span>
-                                  <span className="text-xs text-muted-foreground">
-                                    ({entries.length} {entries.length > 1 ? "éléments" : "élément"})
-                                  </span>
-                                </div>
-                                <div className="text-xs text-muted-foreground font-medium">
-                                  {formatBytes(getTotalSizeByType(entries))}
-                                </div>
-                              </button>
-                              {isExpanded && (
-                                <div className="space-y-1 pl-2">
-                                  {(() => {
-                                    const versionGroups = groupVersions(entries);
-                                    return Object.entries(versionGroups).map(
-                                      ([baseUrl, versions]) => {
-                                        const hasMultipleVersions = versions.length > 1;
-                                        const isVersionExpanded = expandedVersions[baseUrl];
-                                        const totalSize = versions.reduce(
-                                          (sum, v) => sum + v.size,
-                                          0
-                                        );
-
-                                        if (!hasMultipleVersions) {
-                                          const entry = versions[0];
-                                          return (
-                                            <div key={baseUrl} className="py-1">
-                                              <div className="flex items-start justify-between gap-2">
-                                                <div className="flex-1 min-w-0">
-                                                  <div
-                                                    className="font-mono text-xs truncate text-muted-foreground"
-                                                    title={entry.url}
-                                                  >
-                                                    {entry.url.replace(/^https?:\/\/[^/]+/, "")}
-                                                  </div>
-                                                </div>
-                                                <div className="text-xs text-muted-foreground whitespace-nowrap">
-                                                  {formatBytes(entry.size)}
-                                                </div>
-                                              </div>
-                                            </div>
-                                          );
-                                        }
-
-                                        return (
-                                          <div key={baseUrl} className="py-1">
-                                            <button
-                                              type="button"
-                                              onClick={() => toggleVersions(baseUrl)}
-                                              className="w-full flex items-start justify-between gap-2 hover:bg-muted/30 rounded p-1 -m-1 transition-colors"
-                                            >
-                                              <div className="flex-1 min-w-0 flex items-center gap-1">
-                                                {isVersionExpanded ? (
-                                                  <ChevronDown className="h-3 w-3 flex-shrink-0" />
-                                                ) : (
-                                                  <ChevronUp className="h-3 w-3 flex-shrink-0" />
-                                                )}
-                                                <div
-                                                  className="font-mono text-xs truncate text-muted-foreground"
-                                                  title={baseUrl}
-                                                >
-                                                  {baseUrl}
-                                                </div>
-                                                <span className="inline-flex items-center rounded-full bg-orange-500/10 px-1.5 py-0.5 text-xs font-medium text-orange-600 dark:text-orange-400 flex-shrink-0">
-                                                  {versions.length} versions
-                                                </span>
-                                              </div>
-                                              <div className="text-xs text-muted-foreground whitespace-nowrap font-medium">
-                                                {formatBytes(totalSize)}
-                                              </div>
-                                            </button>
-                                            {isVersionExpanded && (
-                                              <div className="pl-4 mt-1 space-y-1">
-                                                {versions.map((version, vIdx) => (
-                                                  <div
-                                                    key={vIdx}
-                                                    className="py-0.5 flex items-start justify-between gap-2"
-                                                  >
-                                                    <div className="flex-1 min-w-0">
-                                                      <div
-                                                        className="font-mono text-xs truncate text-muted-foreground/70"
-                                                        title={version.url}
-                                                      >
-                                                        {new URL(version.url).search ||
-                                                          "(no version)"}
-                                                      </div>
-                                                    </div>
-                                                    <div className="text-xs text-muted-foreground/70 whitespace-nowrap">
-                                                      {formatBytes(version.size)}
-                                                    </div>
-                                                  </div>
-                                                ))}
-                                              </div>
-                                            )}
-                                          </div>
-                                        );
-                                      }
-                                    );
-                                  })()}
-                                </div>
-                              )}
-                            </div>
-                          );
-                        })}
-                      </div>
-                    );
-                  })()}
-                </div>
-              )}
-            </div>
-          )}
-        </div>
-
-        {/* Formulaire TTL */}
-        <form onSubmit={handleSaveTTL} className="space-y-4">
-          <div className="grid gap-3 sm:grid-cols-2">
-            <div className="space-y-2">
-              <label htmlFor="defaultTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.default")}
-              </label>
-              <input
-                type="number"
-                id="defaultTTL"
-                name="defaultTTL"
-                min="1"
-                value={ttlConfig.defaultTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <label htmlFor="homeTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.home")}
-              </label>
-              <input
-                type="number"
-                id="homeTTL"
-                name="homeTTL"
-                min="1"
-                value={ttlConfig.homeTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <label htmlFor="librariesTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.libraries")}
-              </label>
-              <input
-                type="number"
-                id="librariesTTL"
-                name="librariesTTL"
-                min="1"
-                value={ttlConfig.librariesTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <label htmlFor="seriesTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.series")}
-              </label>
-              <input
-                type="number"
-                id="seriesTTL"
-                name="seriesTTL"
-                min="1"
-                value={ttlConfig.seriesTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <label htmlFor="booksTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.books")}
-              </label>
-              <input
-                type="number"
-                id="booksTTL"
-                name="booksTTL"
-                min="1"
-                value={ttlConfig.booksTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <label htmlFor="imagesTTL" className="text-sm font-medium">
-                {t("settings.cache.ttl.images")}
-              </label>
-              <input
-                type="number"
-                id="imagesTTL"
-                name="imagesTTL"
-                min="1"
-                value={ttlConfig.imagesTTL}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              />
-            </div>
-            <div className="space-y-2">
-              <div className="space-y-1">
-                <label htmlFor="imageCacheMaxAge" className="text-sm font-medium">
-                  {t("settings.cache.ttl.imageCacheMaxAge.label")}
-                </label>
-                <p className="text-xs text-muted-foreground">
-                  {t("settings.cache.ttl.imageCacheMaxAge.description")}
-                </p>
-              </div>
-              <select
-                id="imageCacheMaxAge"
-                name="imageCacheMaxAge"
-                value={ttlConfig.imageCacheMaxAge}
-                onChange={handleTTLChange}
-                className="flex h-9 w-full rounded-md border border-input bg-background/70 backdrop-blur-md px-3 py-1 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
-              >
-                <option value="0">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.noCache")}
-                </option>
-                <option value="3600">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.oneHour")}
-                </option>
-                <option value="86400">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.oneDay")}
-                </option>
-                <option value="604800">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.oneWeek")}
-                </option>
-                <option value="2592000">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.oneMonth")}
-                </option>
-                <option value="31536000">
-                  {t("settings.cache.ttl.imageCacheMaxAge.options.oneYear")}
-                </option>
-              </select>
-            </div>
-          </div>
-          <div className="flex gap-3">
-            <button
-              type="submit"
-              className="flex-1 inline-flex items-center justify-center rounded-md bg-primary/90 backdrop-blur-md px-3 py-2 text-sm font-medium text-primary-foreground ring-offset-background transition-colors hover:bg-primary/80 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50"
-            >
-              {t("settings.cache.buttons.saveTTL")}
-            </button>
-            <button
-              type="button"
-              onClick={handleClearCache}
-              disabled={isCacheClearing}
-              className="flex-1 inline-flex items-center justify-center rounded-md bg-destructive/90 backdrop-blur-md px-3 py-2 text-sm font-medium text-destructive-foreground ring-offset-background transition-colors hover:bg-destructive/80 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50"
-            >
-              {isCacheClearing ? (
-                <>
-                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  {t("settings.cache.buttons.clearing")}
-                </>
-              ) : (
-                t("settings.cache.buttons.clear")
-              )}
-            </button>
-          </div>
-          <div className="flex gap-3">
-            <button
-              type="button"
-              onClick={handleClearServiceWorkerCache}
-              disabled={isServiceWorkerClearing}
-              className="flex-1 inline-flex items-center justify-center rounded-md bg-destructive/90 backdrop-blur-md px-3 py-2 text-sm font-medium text-destructive-foreground ring-offset-background transition-colors hover:bg-destructive/80 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50"
-            >
-              {isServiceWorkerClearing ? (
-                <>
-                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  {t("settings.cache.buttons.clearingServiceWorker")}
-                </>
-              ) : (
-                t("settings.cache.buttons.clearServiceWorker")
-              )}
-            </button>
-          </div>
-          <div className="flex gap-3">
-            <button
-              type="button"
-              onClick={handleFlushImageCache}
-              className="flex-1 inline-flex items-center justify-center rounded-md bg-orange-500/90 backdrop-blur-md px-3 py-2 text-sm font-medium text-white ring-offset-background transition-colors hover:bg-orange-500/80 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50"
-            >
-              <ImageOff className="mr-2 h-4 w-4" />
-              {t("settings.cache.buttons.flushImageCache")}
-            </button>
-          </div>
-        </form>
-      </CardContent>
-    </Card>
-  );
-}
diff --git a/src/components/settings/ClientSettings.tsx b/src/components/settings/ClientSettings.tsx
index 55786dc..0731081 100644
--- a/src/components/settings/ClientSettings.tsx
+++ b/src/components/settings/ClientSettings.tsx
@@ -1,21 +1,19 @@
 "use client";
 
-import type { KomgaConfig, TTLConfigData } from "@/types/komga";
+import type { KomgaConfig } from "@/types/komga";
 import { useTranslate } from "@/hooks/useTranslate";
 import { DisplaySettings } from "./DisplaySettings";
 import { KomgaSettings } from "./KomgaSettings";
-import { CacheSettings } from "./CacheSettings";
 import { BackgroundSettings } from "./BackgroundSettings";
 import { AdvancedSettings } from "./AdvancedSettings";
 import { Tabs, TabsList, TabsTrigger, TabsContent } from "@/components/ui/tabs";
-import { Monitor, Network, HardDrive } from "lucide-react";
+import { Monitor, Network } from "lucide-react";
 
 interface ClientSettingsProps {
   initialConfig: KomgaConfig | null;
-  initialTTLConfig: TTLConfigData | null;
 }
 
-export function ClientSettings({ initialConfig, initialTTLConfig }: ClientSettingsProps) {
+export function ClientSettings({ initialConfig }: ClientSettingsProps) {
   const { t } = useTranslate();
 
   return (
@@ -23,7 +21,7 @@ export function ClientSettings({ initialConfig, initialTTLConfig }: ClientSettin
       <h1 className="text-3xl font-bold">{t("settings.title")}</h1>
 
       <Tabs defaultValue="display" className="w-full">
-        <TabsList className="grid w-full grid-cols-3">
+        <TabsList className="grid w-full grid-cols-2">
           <TabsTrigger value="display" className="flex items-center gap-2">
             <Monitor className="h-4 w-4" />
             {t("settings.tabs.display")}
@@ -32,10 +30,6 @@ export function ClientSettings({ initialConfig, initialTTLConfig }: ClientSettin
             <Network className="h-4 w-4" />
             {t("settings.tabs.connection")}
           </TabsTrigger>
-          <TabsTrigger value="cache" className="flex items-center gap-2">
-            <HardDrive className="h-4 w-4" />
-            {t("settings.tabs.cache")}
-          </TabsTrigger>
         </TabsList>
 
         <TabsContent value="display" className="mt-6 space-y-6">
@@ -47,10 +41,6 @@ export function ClientSettings({ initialConfig, initialTTLConfig }: ClientSettin
           <KomgaSettings initialConfig={initialConfig} />
           <AdvancedSettings />
         </TabsContent>
-
-        <TabsContent value="cache" className="mt-6 space-y-6">
-          <CacheSettings initialTTLConfig={initialTTLConfig} />
-        </TabsContent>
       </Tabs>
     </div>
   );
diff --git a/src/components/ui/book-cover.tsx b/src/components/ui/book-cover.tsx
index cf9a9d8..d03a56f 100644
--- a/src/components/ui/book-cover.tsx
+++ b/src/components/ui/book-cover.tsx
@@ -4,7 +4,6 @@ import { CoverClient } from "./cover-client";
 import { ProgressBar } from "./progress-bar";
 import type { BookCoverProps } from "./cover-utils";
 import { getImageUrl } from "@/lib/utils/image-url";
-import { useImageUrl } from "@/hooks/useImageUrl";
 import { ClientOfflineBookService } from "@/lib/services/client-offlinebook.service";
 import { MarkAsReadButton } from "./mark-as-read-button";
 import { MarkAsUnreadButton } from "./mark-as-unread-button";
@@ -63,8 +62,7 @@ export function BookCover({
   const { t } = useTranslate();
   const { isAccessible } = useBookOfflineStatus(book.id);
 
-  const baseUrl = getImageUrl("book", book.id);
-  const imageUrl = useImageUrl(baseUrl);
+  const imageUrl = getImageUrl("book", book.id);
   const isCompleted = book.readProgress?.completed || false;
 
   const currentPage = ClientOfflineBookService.getCurrentPage(book);
diff --git a/src/components/ui/series-cover.tsx b/src/components/ui/series-cover.tsx
index a14c162..5757f37 100644
--- a/src/components/ui/series-cover.tsx
+++ b/src/components/ui/series-cover.tsx
@@ -4,7 +4,6 @@ import { CoverClient } from "./cover-client";
 import { ProgressBar } from "./progress-bar";
 import type { SeriesCoverProps } from "./cover-utils";
 import { getImageUrl } from "@/lib/utils/image-url";
-import { useImageUrl } from "@/hooks/useImageUrl";
 
 export function SeriesCover({
   series,
@@ -12,8 +11,7 @@ export function SeriesCover({
   className,
   showProgressUi = true,
 }: SeriesCoverProps) {
-  const baseUrl = getImageUrl("series", series.id);
-  const imageUrl = useImageUrl(baseUrl);
+  const imageUrl = getImageUrl("series", series.id);
   const isCompleted = series.booksCount === series.booksReadCount;
 
   const readBooks = series.booksReadCount;
diff --git a/src/constants/errorCodes.ts b/src/constants/errorCodes.ts
index f30467d..5c6bca9 100644
--- a/src/constants/errorCodes.ts
+++ b/src/constants/errorCodes.ts
@@ -63,16 +63,6 @@ export const ERROR_CODES = {
     UPDATE_ERROR: "PREFERENCES_UPDATE_ERROR",
     CONTEXT_ERROR: "PREFERENCES_CONTEXT_ERROR",
   },
-  CACHE: {
-    DELETE_ERROR: "CACHE_DELETE_ERROR",
-    SAVE_ERROR: "CACHE_SAVE_ERROR",
-    LOAD_ERROR: "CACHE_LOAD_ERROR",
-    CLEAR_ERROR: "CACHE_CLEAR_ERROR",
-    MODE_FETCH_ERROR: "CACHE_MODE_FETCH_ERROR",
-    MODE_UPDATE_ERROR: "CACHE_MODE_UPDATE_ERROR",
-    INVALID_MODE: "CACHE_INVALID_MODE",
-    SIZE_FETCH_ERROR: "CACHE_SIZE_FETCH_ERROR",
-  },
   UI: {
     TABS_TRIGGER_ERROR: "UI_TABS_TRIGGER_ERROR",
     TABS_CONTENT_ERROR: "UI_TABS_CONTENT_ERROR",
diff --git a/src/constants/errorMessages.ts b/src/constants/errorMessages.ts
index e107de9..e0f68c5 100644
--- a/src/constants/errorMessages.ts
+++ b/src/constants/errorMessages.ts
@@ -60,16 +60,6 @@ export const ERROR_MESSAGES: Record<string, string> = {
   [ERROR_CODES.PREFERENCES.CONTEXT_ERROR]:
     "🔄 usePreferences must be used within a PreferencesProvider",
 
-  // Cache
-  [ERROR_CODES.CACHE.DELETE_ERROR]: "🗑️ Error deleting cache",
-  [ERROR_CODES.CACHE.SAVE_ERROR]: "💾 Error saving to cache",
-  [ERROR_CODES.CACHE.LOAD_ERROR]: "📂 Error loading from cache",
-  [ERROR_CODES.CACHE.CLEAR_ERROR]: "🧹 Error clearing cache completely",
-  [ERROR_CODES.CACHE.MODE_FETCH_ERROR]: "⚙️ Error fetching cache mode",
-  [ERROR_CODES.CACHE.MODE_UPDATE_ERROR]: "⚙️ Error updating cache mode",
-  [ERROR_CODES.CACHE.INVALID_MODE]: "⚠️ Invalid cache mode. Must be 'file' or 'memory'",
-  [ERROR_CODES.CACHE.SIZE_FETCH_ERROR]: "📊 Error fetching cache size",
-
   // UI
   [ERROR_CODES.UI.TABS_TRIGGER_ERROR]: "🔄 TabsTrigger must be used within a Tabs component",
   [ERROR_CODES.UI.TABS_CONTENT_ERROR]: "🔄 TabsContent must be used within a Tabs component",
diff --git a/src/contexts/ImageCacheContext.tsx b/src/contexts/ImageCacheContext.tsx
deleted file mode 100644
index f33c677..0000000
--- a/src/contexts/ImageCacheContext.tsx
+++ /dev/null
@@ -1,58 +0,0 @@
-"use client";
-
-import React, { createContext, useContext, useState, useCallback, useEffect } from "react";
-import logger from "@/lib/logger";
-
-interface ImageCacheContextType {
-  cacheVersion: string;
-  flushImageCache: () => void;
-  getImageUrl: (baseUrl: string) => string;
-}
-
-const ImageCacheContext = createContext<ImageCacheContextType | undefined>(undefined);
-
-export function ImageCacheProvider({ children }: { children: React.ReactNode }) {
-  const [cacheVersion, setCacheVersion] = useState<string>("");
-
-  // Initialiser la version depuis localStorage au montage
-  useEffect(() => {
-    const storedVersion = localStorage.getItem("imageCacheVersion");
-    if (storedVersion) {
-      setCacheVersion(storedVersion);
-    } else {
-      const newVersion = Date.now().toString();
-      setCacheVersion(newVersion);
-      localStorage.setItem("imageCacheVersion", newVersion);
-    }
-  }, []);
-
-  const flushImageCache = useCallback(() => {
-    const newVersion = Date.now().toString();
-    setCacheVersion(newVersion);
-    localStorage.setItem("imageCacheVersion", newVersion);
-    logger.info(`🗑️  Image cache flushed - new version: ${newVersion}`);
-  }, []);
-
-  const getImageUrl = useCallback(
-    (baseUrl: string) => {
-      if (!cacheVersion) return baseUrl;
-      const separator = baseUrl.includes("?") ? "&" : "?";
-      return `${baseUrl}${separator}v=${cacheVersion}`;
-    },
-    [cacheVersion]
-  );
-
-  return (
-    <ImageCacheContext.Provider value={{ cacheVersion, flushImageCache, getImageUrl }}>
-      {children}
-    </ImageCacheContext.Provider>
-  );
-}
-
-export function useImageCache() {
-  const context = useContext(ImageCacheContext);
-  if (context === undefined) {
-    throw new Error("useImageCache must be used within an ImageCacheProvider");
-  }
-  return context;
-}
diff --git a/src/hooks/useImageUrl.ts b/src/hooks/useImageUrl.ts
deleted file mode 100644
index 70aeab8..0000000
--- a/src/hooks/useImageUrl.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-import { useImageCache } from "@/contexts/ImageCacheContext";
-import { useMemo } from "react";
-
-/**
- * Hook pour obtenir une URL d'image avec cache busting
- * Ajoute automatiquement ?v={cacheVersion} à l'URL
- */
-export function useImageUrl(baseUrl: string): string {
-  const { getImageUrl } = useImageCache();
-
-  return useMemo(() => {
-    return getImageUrl(baseUrl);
-  }, [baseUrl, getImageUrl]);
-}
diff --git a/src/i18n/messages/en/common.json b/src/i18n/messages/en/common.json
index 96118d0..ba10d87 100644
--- a/src/i18n/messages/en/common.json
+++ b/src/i18n/messages/en/common.json
@@ -69,8 +69,7 @@
     "title": "Preferences",
     "tabs": {
       "display": "Display",
-      "connection": "Connection",
-      "cache": "Cache"
+      "connection": "Connection"
     },
     "display": {
       "title": "Display Preferences",
@@ -106,31 +105,9 @@
       "title": "Advanced Settings",
       "description": "Configure advanced performance and reliability settings.",
       "save": "Save settings",
-      "maxConcurrentRequests": {
-        "label": "Max Concurrent Requests",
-        "description": "Maximum number of simultaneous requests to Komga server (1-10)"
-      },
       "prefetchCount": {
         "label": "Reader Prefetch Count",
         "description": "Number of pages to preload in the reader (0-20)"
-      },
-      "circuitBreaker": {
-        "title": "Circuit Breaker",
-        "description": "Automatic protection against server overload",
-        "threshold": {
-          "label": "Failure Threshold",
-          "description": "Number of consecutive failures before opening the circuit (1-20)"
-        },
-        "timeout": {
-          "label": "Request Timeout",
-          "description": "Maximum wait time for a request before considering it failed",
-          "unit": "milliseconds (1000ms = 1 second)"
-        },
-        "resetTimeout": {
-          "label": "Reset Timeout",
-          "description": "Time to wait before attempting to close the circuit",
-          "unit": "milliseconds (1000ms = 1 second)"
-        }
       }
     },
     "error": {
@@ -159,75 +136,6 @@
         "title": "Error saving configuration",
         "message": "An error occurred while saving the configuration"
       }
-    },
-    "cache": {
-      "title": "Cache Configuration",
-      "description": "Manage data caching settings.",
-      "mode": {
-        "label": "Cache mode",
-        "description": "Memory cache is faster but doesn't persist between restarts"
-      },
-      "size": {
-        "title": "Cache size",
-        "server": "Server cache",
-        "serviceWorker": "SW cache (total)",
-        "api": "API cache (data)",
-        "items": "{count} item(s)",
-        "loading": "Loading...",
-        "error": "Error loading"
-      },
-      "ttl": {
-        "default": "Default TTL (minutes)",
-        "home": "Home page TTL",
-        "libraries": "Libraries TTL",
-        "series": "Series TTL",
-        "books": "Books TTL",
-        "images": "Images TTL",
-        "imageCacheMaxAge": {
-          "label": "HTTP Image Cache Duration",
-          "description": "Duration for images to be cached in the browser",
-          "options": {
-            "noCache": "No cache (0s)",
-            "oneHour": "1 hour (3600s)",
-            "oneDay": "1 day (86400s)",
-            "oneWeek": "1 week (604800s)",
-            "oneMonth": "1 month (2592000s) - Recommended",
-            "oneYear": "1 year (31536000s)"
-          }
-        }
-      },
-      "buttons": {
-        "saveTTL": "Save TTL",
-        "clear": "Clear cache",
-        "clearing": "Clearing...",
-        "clearServiceWorker": "Clear service worker cache",
-        "clearingServiceWorker": "Clearing service worker cache...",
-        "flushImageCache": "Force reload images"
-      },
-      "messages": {
-        "ttlSaved": "TTL configuration saved successfully",
-        "cleared": "Server cache cleared successfully",
-        "serviceWorkerCleared": "Service worker cache cleared successfully",
-        "imageCacheFlushed": "Images will be reloaded - refresh the page"
-      },
-      "error": {
-        "title": "Error clearing cache",
-        "message": "An error occurred while clearing the cache",
-        "ttl": "Error saving TTL configuration",
-        "serviceWorkerMessage": "An error occurred while clearing the service worker cache"
-      },
-      "entries": {
-        "title": "Cache content preview",
-        "serverTitle": "Server cache preview",
-        "serviceWorkerTitle": "Service worker cache preview",
-        "loading": "Loading entries...",
-        "empty": "No entries in cache",
-        "expired": "Expired",
-        "daysRemaining": "{count} day(s) remaining",
-        "hoursRemaining": "{count} hour(s) remaining",
-        "minutesRemaining": "{count} minute(s) remaining",
-        "lessThanMinute": "Less than a minute"
-      }
     }
   },
   "library": {
@@ -463,14 +371,6 @@
     "PREFERENCES_UPDATE_ERROR": "Error updating preferences",
     "PREFERENCES_CONTEXT_ERROR": "Preferences context error",
 
-    "CACHE_DELETE_ERROR": "Error deleting cache",
-    "CACHE_SAVE_ERROR": "Error saving cache",
-    "CACHE_LOAD_ERROR": "Error loading cache",
-    "CACHE_CLEAR_ERROR": "Error clearing cache",
-    "CACHE_MODE_FETCH_ERROR": "Error fetching cache mode",
-    "CACHE_MODE_UPDATE_ERROR": "Error updating cache mode",
-    "CACHE_INVALID_MODE": "Invalid cache mode",
-
     "UI_TABS_TRIGGER_ERROR": "Error triggering tabs",
     "UI_TABS_CONTENT_ERROR": "Error loading tabs content",
 
diff --git a/src/i18n/messages/fr/common.json b/src/i18n/messages/fr/common.json
index 1b830f6..651e3f5 100644
--- a/src/i18n/messages/fr/common.json
+++ b/src/i18n/messages/fr/common.json
@@ -69,8 +69,7 @@
     "title": "Préférences",
     "tabs": {
       "display": "Affichage",
-      "connection": "Connexion",
-      "cache": "Cache"
+      "connection": "Connexion"
     },
     "display": {
       "title": "Préférences d'affichage",
@@ -106,31 +105,9 @@
       "title": "Paramètres avancés",
       "description": "Configurez les paramètres avancés de performance et de fiabilité.",
       "save": "Enregistrer les paramètres",
-      "maxConcurrentRequests": {
-        "label": "Requêtes simultanées max",
-        "description": "Nombre maximum de requêtes simultanées vers le serveur Komga (1-10)"
-      },
       "prefetchCount": {
         "label": "Préchargement du lecteur",
         "description": "Nombre de pages à précharger dans le lecteur (0-20)"
-      },
-      "circuitBreaker": {
-        "title": "Disjoncteur",
-        "description": "Protection automatique contre la surcharge du serveur",
-        "threshold": {
-          "label": "Seuil d'échec",
-          "description": "Nombre d'échecs consécutifs avant ouverture du circuit (1-20)"
-        },
-        "timeout": {
-          "label": "Délai d'expiration",
-          "description": "Temps d'attente maximum pour une requête avant de la considérer comme échouée",
-          "unit": "millisecondes (1000ms = 1 seconde)"
-        },
-        "resetTimeout": {
-          "label": "Délai de réinitialisation",
-          "description": "Temps d'attente avant de tenter de fermer le circuit",
-          "unit": "millisecondes (1000ms = 1 seconde)"
-        }
       }
     },
     "error": {
@@ -159,75 +136,6 @@
         "title": "Erreur lors de la sauvegarde de la configuration",
         "message": "Une erreur est survenue lors de la sauvegarde de la configuration"
       }
-    },
-    "cache": {
-      "title": "Configuration du Cache",
-      "description": "Gérez les paramètres de mise en cache des données.",
-      "mode": {
-        "label": "Mode de cache",
-        "description": "Le cache en mémoire est plus rapide mais ne persiste pas entre les redémarrages"
-      },
-      "size": {
-        "title": "Taille du cache",
-        "server": "Cache serveur",
-        "serviceWorker": "Cache SW (total)",
-        "api": "Cache API (données)",
-        "items": "{count} élément(s)",
-        "loading": "Chargement...",
-        "error": "Erreur lors du chargement"
-      },
-      "ttl": {
-        "default": "TTL par défaut (minutes)",
-        "home": "TTL page d'accueil",
-        "libraries": "TTL bibliothèques",
-        "series": "TTL séries",
-        "books": "TTL tomes",
-        "images": "TTL images",
-        "imageCacheMaxAge": {
-          "label": "Durée du cache HTTP des images",
-          "description": "Durée de conservation des images dans le cache du navigateur",
-          "options": {
-            "noCache": "Aucun cache (0s)",
-            "oneHour": "1 heure (3600s)",
-            "oneDay": "1 jour (86400s)",
-            "oneWeek": "1 semaine (604800s)",
-            "oneMonth": "1 mois (2592000s) - Recommandé",
-            "oneYear": "1 an (31536000s)"
-          }
-        }
-      },
-      "buttons": {
-        "saveTTL": "Sauvegarder les TTL",
-        "clear": "Vider le cache",
-        "clearing": "Suppression...",
-        "clearServiceWorker": "Vider le cache du service worker",
-        "clearingServiceWorker": "Suppression du cache service worker...",
-        "flushImageCache": "Forcer le rechargement des images"
-      },
-      "messages": {
-        "ttlSaved": "La configuration des TTL a été sauvegardée avec succès",
-        "cleared": "Cache serveur supprimé avec succès",
-        "serviceWorkerCleared": "Cache du service worker supprimé avec succès",
-        "imageCacheFlushed": "Les images seront rechargées - rafraîchissez la page"
-      },
-      "error": {
-        "title": "Erreur lors de la suppression du cache",
-        "message": "Une erreur est survenue lors de la suppression du cache",
-        "ttl": "Erreur lors de la sauvegarde de la configuration TTL",
-        "serviceWorkerMessage": "Une erreur est survenue lors de la suppression du cache du service worker"
-      },
-      "entries": {
-        "title": "Aperçu du contenu du cache",
-        "serverTitle": "Aperçu du cache serveur",
-        "serviceWorkerTitle": "Aperçu du cache service worker",
-        "loading": "Chargement des entrées...",
-        "empty": "Aucune entrée dans le cache",
-        "expired": "Expiré",
-        "daysRemaining": "{count} jour(s) restant(s)",
-        "hoursRemaining": "{count} heure(s) restante(s)",
-        "minutesRemaining": "{count} minute(s) restante(s)",
-        "lessThanMinute": "Moins d'une minute"
-      }
     }
   },
   "library": {
@@ -461,14 +369,6 @@
     "PREFERENCES_UPDATE_ERROR": "Erreur lors de la mise à jour des préférences",
     "PREFERENCES_CONTEXT_ERROR": "Erreur de contexte des préférences",
 
-    "CACHE_DELETE_ERROR": "Erreur lors de la suppression du cache",
-    "CACHE_SAVE_ERROR": "Erreur lors de la sauvegarde du cache",
-    "CACHE_LOAD_ERROR": "Erreur lors du chargement du cache",
-    "CACHE_CLEAR_ERROR": "Erreur lors de la suppression du cache",
-    "CACHE_MODE_FETCH_ERROR": "Erreur lors de la récupération du mode de cache",
-    "CACHE_MODE_UPDATE_ERROR": "Erreur lors de la mise à jour du mode de cache",
-    "CACHE_INVALID_MODE": "Mode de cache invalide",
-
     "UI_TABS_TRIGGER_ERROR": "Erreur lors du déclenchement des onglets",
     "UI_TABS_CONTENT_ERROR": "Erreur lors du chargement du contenu des onglets",
 
diff --git a/src/lib/services/base-api.service.ts b/src/lib/services/base-api.service.ts
index 6c0aba1..393c659 100644
--- a/src/lib/services/base-api.service.ts
+++ b/src/lib/services/base-api.service.ts
@@ -1,19 +1,10 @@
 import type { AuthConfig } from "@/types/auth";
-import type { CacheType } from "@/types/cache";
-import { getServerCacheService } from "./server-cache.service";
 import { ConfigDBService } from "./config-db.service";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
 import type { KomgaConfig } from "@/types/komga";
-import type { ServerCacheService } from "./server-cache.service";
-import { RequestMonitorService } from "./request-monitor.service";
-import { RequestQueueService } from "./request-queue.service";
-import { CircuitBreakerService } from "./circuit-breaker.service";
-import { PreferencesService } from "./preferences.service";
 import logger from "@/lib/logger";
 
-export type { CacheType };
-
 interface KomgaRequestInit extends RequestInit {
   isImage?: boolean;
   noJson?: boolean;
@@ -25,68 +16,7 @@ interface KomgaUrlBuilder {
 }
 
 export abstract class BaseApiService {
-  private static requestQueueInitialized = false;
-  private static circuitBreakerInitialized = false;
-
-  /**
-   * Initialise le RequestQueueService avec les préférences de l'utilisateur
-   */
-  private static async initializeRequestQueue(): Promise<void> {
-    if (this.requestQueueInitialized) {
-      return;
-    }
-
-    try {
-      // Configurer le getter qui récupère dynamiquement la valeur depuis les préférences
-      RequestQueueService.setMaxConcurrentGetter(async () => {
-        try {
-          const preferences = await PreferencesService.getPreferences();
-          return preferences.komgaMaxConcurrentRequests;
-        } catch (error) {
-          logger.error({ err: error }, "Failed to get preferences for request queue");
-          return 5; // Valeur par défaut
-        }
-      });
-
-      this.requestQueueInitialized = true;
-    } catch (error) {
-      logger.error({ err: error }, "Failed to initialize request queue");
-    }
-  }
-
-  /**
-   * Initialise le CircuitBreakerService avec les préférences de l'utilisateur
-   */
-  private static async initializeCircuitBreaker(): Promise<void> {
-    if (this.circuitBreakerInitialized) {
-      return;
-    }
-
-    try {
-      // Configurer le getter qui récupère dynamiquement la config depuis les préférences
-      CircuitBreakerService.setConfigGetter(async () => {
-        try {
-          const preferences = await PreferencesService.getPreferences();
-          return preferences.circuitBreakerConfig;
-        } catch (error) {
-          logger.error({ err: error }, "Failed to get preferences for circuit breaker");
-          return {
-            threshold: 5,
-            timeout: 30000,
-            resetTimeout: 60000,
-          };
-        }
-      });
-
-      this.circuitBreakerInitialized = true;
-    } catch (error) {
-      logger.error({ err: error }, "Failed to initialize circuit breaker");
-    }
-  }
-
   protected static async getKomgaConfig(): Promise<AuthConfig> {
-    // Initialiser les services si ce n'est pas déjà fait
-    await Promise.all([this.initializeRequestQueue(), this.initializeCircuitBreaker()]);
     try {
       const config: KomgaConfig | null = await ConfigDBService.getConfig();
       if (!config) {
@@ -117,22 +47,6 @@ export abstract class BaseApiService {
     });
   }
 
-  protected static async fetchWithCache<T>(
-    key: string,
-    fetcher: () => Promise<T>,
-    type: CacheType = "DEFAULT"
-  ): Promise<T> {
-    const cacheService: ServerCacheService = await getServerCacheService();
-
-    try {
-      const result = await cacheService.getOrSet(key, fetcher, type);
-
-      return result;
-    } catch (error) {
-      throw error;
-    }
-  }
-
   protected static buildUrl(
     config: AuthConfig,
     path: string,
@@ -159,12 +73,6 @@ export abstract class BaseApiService {
     return url.toString();
   }
 
-  protected static async resolveWithFallback(url: string): Promise<string> {
-    // DNS resolution is only needed server-side and causes build issues
-    // The fetch API will handle DNS resolution automatically
-    return url;
-  }
-
   protected static async fetchFromApi<T>(
     urlBuilder: KomgaUrlBuilder,
     headersOptions = {},
@@ -172,7 +80,7 @@ export abstract class BaseApiService {
   ): Promise<T> {
     const config: AuthConfig = await this.getKomgaConfig();
     const { path, params } = urlBuilder;
-    const url = await this.resolveWithFallback(this.buildUrl(config, path, params));
+    const url = this.buildUrl(config, path, params);
 
     const headers: Headers = this.getAuthHeaders(config);
     if (headersOptions) {
@@ -185,10 +93,6 @@ export abstract class BaseApiService {
     const startTime = isDebug ? Date.now() : 0;
 
     if (isDebug) {
-      const queueStats = {
-        active: RequestQueueService.getActiveCount(),
-        queued: RequestQueueService.getQueueLength(),
-      };
       logger.info(
         {
           url,
@@ -196,74 +100,64 @@ export abstract class BaseApiService {
           params,
           isImage: options.isImage,
           noJson: options.noJson,
-          queue: queueStats,
         },
         "🔵 Komga Request"
       );
     }
 
-    // Timeout réduit à 15 secondes pour éviter les blocages longs
+    // Timeout de 15 secondes pour éviter les blocages longs
     const timeoutMs = 15000;
     const controller = new AbortController();
     const timeoutId = setTimeout(() => controller.abort(), timeoutMs);
 
     try {
-      // Utiliser le circuit breaker pour éviter de surcharger Komga
-      const response = await CircuitBreakerService.execute(async () => {
-        // Enqueue la requête pour limiter la concurrence
-        return await RequestQueueService.enqueue(async () => {
-          try {
-            return await fetch(url, {
-              headers,
-              ...options,
-              signal: controller.signal,
-              // Configure undici connection timeouts
-              // @ts-ignore - undici-specific options not in standard fetch types
-              connectTimeout: timeoutMs,
-              bodyTimeout: timeoutMs,
-              headersTimeout: timeoutMs,
-            });
-          } catch (fetchError: any) {
-            // Gestion spécifique des erreurs DNS
-            if (fetchError?.cause?.code === "EAI_AGAIN" || fetchError?.code === "EAI_AGAIN") {
-              logger.error(
-                `DNS resolution failed for ${url}. Retrying with different DNS settings...`
-              );
+      let response: Response;
 
-              // Retry avec des paramètres DNS différents
-              return await fetch(url, {
-                headers,
-                ...options,
-                signal: controller.signal,
-                // @ts-ignore - undici-specific options
-                connectTimeout: timeoutMs,
-                bodyTimeout: timeoutMs,
-                headersTimeout: timeoutMs,
-                // Force IPv4 si IPv6 pose problème
-                // @ts-ignore
-                family: 4,
-              });
-            }
-
-            // Retry automatique sur timeout de connexion (cold start)
-            if (fetchError?.cause?.code === "UND_ERR_CONNECT_TIMEOUT") {
-              logger.info(`⏱️  Connection timeout for ${url}. Retrying once (cold start)...`);
-
-              return await fetch(url, {
-                headers,
-                ...options,
-                signal: controller.signal,
-                // @ts-ignore - undici-specific options
-                connectTimeout: timeoutMs,
-                bodyTimeout: timeoutMs,
-                headersTimeout: timeoutMs,
-              });
-            }
-
-            throw fetchError;
-          }
+      try {
+        response = await fetch(url, {
+          headers,
+          ...options,
+          signal: controller.signal,
+          // @ts-ignore - undici-specific options not in standard fetch types
+          connectTimeout: timeoutMs,
+          bodyTimeout: timeoutMs,
+          headersTimeout: timeoutMs,
         });
-      });
+      } catch (fetchError: any) {
+        // Gestion spécifique des erreurs DNS
+        if (fetchError?.cause?.code === "EAI_AGAIN" || fetchError?.code === "EAI_AGAIN") {
+          logger.error(`DNS resolution failed for ${url}. Retrying with different DNS settings...`);
+
+          response = await fetch(url, {
+            headers,
+            ...options,
+            signal: controller.signal,
+            // @ts-ignore - undici-specific options
+            connectTimeout: timeoutMs,
+            bodyTimeout: timeoutMs,
+            headersTimeout: timeoutMs,
+            // Force IPv4 si IPv6 pose problème
+            // @ts-ignore
+            family: 4,
+          });
+        } else if (fetchError?.cause?.code === "UND_ERR_CONNECT_TIMEOUT") {
+          // Retry automatique sur timeout de connexion (cold start)
+          logger.info(`⏱️  Connection timeout for ${url}. Retrying once (cold start)...`);
+
+          response = await fetch(url, {
+            headers,
+            ...options,
+            signal: controller.signal,
+            // @ts-ignore - undici-specific options
+            connectTimeout: timeoutMs,
+            bodyTimeout: timeoutMs,
+            headersTimeout: timeoutMs,
+          });
+        } else {
+          throw fetchError;
+        }
+      }
+
       clearTimeout(timeoutId);
 
       if (isDebug) {
@@ -320,7 +214,6 @@ export abstract class BaseApiService {
       throw error;
     } finally {
       clearTimeout(timeoutId);
-      RequestMonitorService.decrementActive();
     }
   }
 }
diff --git a/src/lib/services/book.service.ts b/src/lib/services/book.service.ts
index d691c94..ebe887c 100644
--- a/src/lib/services/book.service.ts
+++ b/src/lib/services/book.service.ts
@@ -1,47 +1,33 @@
 import { BaseApiService } from "./base-api.service";
-import type { KomgaBook, KomgaBookWithPages, TTLConfig } from "@/types/komga";
+import type { KomgaBook, KomgaBookWithPages } from "@/types/komga";
 import type { ImageResponse } from "./image.service";
 import { ImageService } from "./image.service";
 import { PreferencesService } from "./preferences.service";
-import { ConfigDBService } from "./config-db.service";
 import { SeriesService } from "./series.service";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
-import logger from "@/lib/logger";
+
+// Cache HTTP navigateur : 30 jours (immutable car les images ne changent pas)
+const IMAGE_CACHE_MAX_AGE = 2592000;
 
 export class BookService extends BaseApiService {
-  private static async getImageCacheMaxAge(): Promise<number> {
-    try {
-      const ttlConfig: TTLConfig | null = await ConfigDBService.getTTLConfig();
-      const maxAge = ttlConfig?.imageCacheMaxAge ?? 2592000;
-      return maxAge;
-    } catch (error) {
-      logger.error({ err: error }, "[ImageCache] Error fetching TTL config");
-      return 2592000; // 30 jours par défaut en cas d'erreur
-    }
-  }
   static async getBook(bookId: string): Promise<KomgaBookWithPages> {
     try {
-      return this.fetchWithCache<KomgaBookWithPages>(
-        `book-${bookId}`,
-        async () => {
-          // Récupération parallèle des détails du tome et des pages
-          const [book, pages] = await Promise.all([
-            this.fetchFromApi<KomgaBook>({ path: `books/${bookId}` }),
-            this.fetchFromApi<{ number: number }[]>({ path: `books/${bookId}/pages` }),
-          ]);
+      // Récupération parallèle des détails du tome et des pages
+      const [book, pages] = await Promise.all([
+        this.fetchFromApi<KomgaBook>({ path: `books/${bookId}` }),
+        this.fetchFromApi<{ number: number }[]>({ path: `books/${bookId}/pages` }),
+      ]);
 
-          return {
-            book,
-            pages: pages.map((page: any) => page.number),
-          };
-        },
-        "BOOKS"
-      );
+      return {
+        book,
+        pages: pages.map((page: any) => page.number),
+      };
     } catch (error) {
       throw new AppError(ERROR_CODES.BOOK.NOT_FOUND, {}, error);
     }
   }
+
   public static async getNextBook(bookId: string, _seriesId: string): Promise<KomgaBook | null> {
     try {
       // Utiliser l'endpoint natif Komga pour obtenir le livre suivant
@@ -63,7 +49,6 @@ export class BookService extends BaseApiService {
 
   static async getBookSeriesId(bookId: string): Promise<string> {
     try {
-      // Récupérer le livre sans cache pour éviter les données obsolètes
       const book = await this.fetchFromApi<KomgaBook>({ path: `books/${bookId}` });
       return book.seriesId;
     } catch (error) {
@@ -136,12 +121,10 @@ export class BookService extends BaseApiService {
         response.buffer.byteOffset + response.buffer.byteLength
       ) as ArrayBuffer;
 
-      const maxAge = await this.getImageCacheMaxAge();
-
       return new Response(arrayBuffer, {
         headers: {
           "Content-Type": response.contentType || "image/jpeg",
-          "Cache-Control": `public, max-age=${maxAge}, immutable`,
+          "Cache-Control": `public, max-age=${IMAGE_CACHE_MAX_AGE}, immutable`,
         },
       });
     } catch (error) {
@@ -153,7 +136,6 @@ export class BookService extends BaseApiService {
     try {
       // Récupérer les préférences de l'utilisateur
       const preferences = await PreferencesService.getPreferences();
-      const maxAge = await this.getImageCacheMaxAge();
 
       // Si l'utilisateur préfère les vignettes, utiliser la miniature
       if (preferences.showThumbnails) {
@@ -161,7 +143,7 @@ export class BookService extends BaseApiService {
         return new Response(response.buffer.buffer as ArrayBuffer, {
           headers: {
             "Content-Type": response.contentType || "image/jpeg",
-            "Cache-Control": `public, max-age=${maxAge}, immutable`,
+            "Cache-Control": `public, max-age=${IMAGE_CACHE_MAX_AGE}, immutable`,
           },
         });
       }
@@ -186,12 +168,11 @@ export class BookService extends BaseApiService {
       const response: ImageResponse = await ImageService.getImage(
         `books/${bookId}/pages/${pageNumber}/thumbnail?zero_based=true`
       );
-      const maxAge = await this.getImageCacheMaxAge();
 
       return new Response(response.buffer.buffer as ArrayBuffer, {
         headers: {
           "Content-Type": response.contentType || "image/jpeg",
-          "Cache-Control": `public, max-age=${maxAge}, immutable`,
+          "Cache-Control": `public, max-age=${IMAGE_CACHE_MAX_AGE}, immutable`,
         },
       });
     } catch (error) {
diff --git a/src/lib/services/circuit-breaker.service.ts b/src/lib/services/circuit-breaker.service.ts
deleted file mode 100644
index 32ae8a6..0000000
--- a/src/lib/services/circuit-breaker.service.ts
+++ /dev/null
@@ -1,114 +0,0 @@
-/**
- * Circuit Breaker pour éviter de surcharger Komga quand il est défaillant
- * Évite l'effet avalanche en coupant les requêtes vers un service défaillant
- */
-import type { CircuitBreakerConfig } from "@/types/preferences";
-import logger from "@/lib/logger";
-
-interface CircuitBreakerState {
-  state: "CLOSED" | "OPEN" | "HALF_OPEN";
-  failureCount: number;
-  lastFailureTime: number;
-  nextAttemptTime: number;
-}
-
-class CircuitBreaker {
-  private state: CircuitBreakerState = {
-    state: "CLOSED",
-    failureCount: 0,
-    lastFailureTime: 0,
-    nextAttemptTime: 0,
-  };
-
-  private config = {
-    failureThreshold: 5, // Nombre d'échecs avant ouverture
-    recoveryTimeout: 30000, // 30s avant tentative de récupération
-    resetTimeout: 60000, // Délai de reset après échec
-  };
-
-  private getConfigFromPreferences: (() => Promise<CircuitBreakerConfig>) | null = null;
-
-  /**
-   * Configure une fonction pour récupérer dynamiquement la config depuis les préférences
-   */
-  setConfigGetter(getter: () => Promise<CircuitBreakerConfig>): void {
-    this.getConfigFromPreferences = getter;
-  }
-
-  /**
-   * Récupère la config actuelle, soit depuis les préférences, soit depuis les valeurs par défaut
-   */
-  private async getCurrentConfig(): Promise<typeof this.config> {
-    if (this.getConfigFromPreferences) {
-      try {
-        const prefConfig = await this.getConfigFromPreferences();
-        return {
-          failureThreshold: prefConfig.threshold ?? 5,
-          recoveryTimeout: prefConfig.timeout ?? 30000,
-          resetTimeout: prefConfig.resetTimeout ?? 60000,
-        };
-      } catch (error) {
-        logger.error({ err: error }, "Error getting circuit breaker config from preferences");
-        return this.config;
-      }
-    }
-    return this.config;
-  }
-
-  async execute<T>(operation: () => Promise<T>): Promise<T> {
-    const config = await this.getCurrentConfig();
-
-    if (this.state.state === "OPEN") {
-      if (Date.now() < this.state.nextAttemptTime) {
-        throw new Error("Circuit breaker is OPEN - Komga service unavailable");
-      }
-      this.state.state = "HALF_OPEN";
-    }
-
-    try {
-      const result = await operation();
-      this.onSuccess();
-      return result;
-    } catch (error) {
-      await this.onFailure(config);
-      throw error;
-    }
-  }
-
-  private onSuccess(): void {
-    if (this.state.state === "HALF_OPEN") {
-      this.state.failureCount = 0;
-      this.state.state = "CLOSED";
-      logger.info("[CIRCUIT-BREAKER] ✅ Circuit closed - Komga recovered");
-    }
-  }
-
-  private async onFailure(config: typeof this.config): Promise<void> {
-    this.state.failureCount++;
-    this.state.lastFailureTime = Date.now();
-
-    if (this.state.failureCount >= config.failureThreshold) {
-      this.state.state = "OPEN";
-      this.state.nextAttemptTime = Date.now() + config.resetTimeout;
-      logger.warn(
-        `[CIRCUIT-BREAKER] 🔴 Circuit OPEN - Komga failing (${this.state.failureCount} failures, reset in ${config.resetTimeout}ms)`
-      );
-    }
-  }
-
-  getState(): CircuitBreakerState {
-    return { ...this.state };
-  }
-
-  reset(): void {
-    this.state = {
-      state: "CLOSED",
-      failureCount: 0,
-      lastFailureTime: 0,
-      nextAttemptTime: 0,
-    };
-    logger.info("[CIRCUIT-BREAKER] 🔄 Circuit reset");
-  }
-}
-
-export const CircuitBreakerService = new CircuitBreaker();
diff --git a/src/lib/services/config-db.service.ts b/src/lib/services/config-db.service.ts
index 7dc7683..9083aea 100644
--- a/src/lib/services/config-db.service.ts
+++ b/src/lib/services/config-db.service.ts
@@ -2,7 +2,7 @@ import prisma from "@/lib/prisma";
 import { getCurrentUser } from "../auth-utils";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
-import type { User, KomgaConfigData, TTLConfigData, KomgaConfig, TTLConfig } from "@/types/komga";
+import type { User, KomgaConfigData, KomgaConfig } from "@/types/komga";
 
 export class ConfigDBService {
   private static async getCurrentUser(): Promise<User> {
@@ -62,58 +62,4 @@ export class ConfigDBService {
       throw new AppError(ERROR_CODES.CONFIG.FETCH_ERROR, {}, error);
     }
   }
-
-  static async getTTLConfig(): Promise<TTLConfig | null> {
-    try {
-      const user: User | null = await this.getCurrentUser();
-      const userId = parseInt(user.id, 10);
-
-      const config = await prisma.tTLConfig.findUnique({
-        where: { userId },
-      });
-      return config as TTLConfig | null;
-    } catch (error) {
-      if (error instanceof AppError) {
-        throw error;
-      }
-      throw new AppError(ERROR_CODES.CONFIG.TTL_FETCH_ERROR, {}, error);
-    }
-  }
-
-  static async saveTTLConfig(data: TTLConfigData): Promise<TTLConfig> {
-    try {
-      const user: User | null = await this.getCurrentUser();
-      const userId = parseInt(user.id, 10);
-
-      const config = await prisma.tTLConfig.upsert({
-        where: { userId },
-        update: {
-          defaultTTL: data.defaultTTL,
-          homeTTL: data.homeTTL,
-          librariesTTL: data.librariesTTL,
-          seriesTTL: data.seriesTTL,
-          booksTTL: data.booksTTL,
-          imagesTTL: data.imagesTTL,
-          imageCacheMaxAge: data.imageCacheMaxAge,
-        },
-        create: {
-          userId,
-          defaultTTL: data.defaultTTL,
-          homeTTL: data.homeTTL,
-          librariesTTL: data.librariesTTL,
-          seriesTTL: data.seriesTTL,
-          booksTTL: data.booksTTL,
-          imagesTTL: data.imagesTTL,
-          imageCacheMaxAge: data.imageCacheMaxAge,
-        },
-      });
-
-      return config as TTLConfig;
-    } catch (error) {
-      if (error instanceof AppError) {
-        throw error;
-      }
-      throw new AppError(ERROR_CODES.CONFIG.TTL_SAVE_ERROR, {}, error);
-    }
-  }
 }
diff --git a/src/lib/services/home.service.ts b/src/lib/services/home.service.ts
index 9d4ffd0..c6eead2 100644
--- a/src/lib/services/home.service.ts
+++ b/src/lib/services/home.service.ts
@@ -2,7 +2,6 @@ import { BaseApiService } from "./base-api.service";
 import type { KomgaBook, KomgaSeries } from "@/types/komga";
 import type { LibraryResponse } from "@/types/library";
 import type { HomeData } from "@/types/home";
-import { getServerCacheService } from "./server-cache.service";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
 
@@ -12,80 +11,55 @@ export class HomeService extends BaseApiService {
   static async getHomeData(): Promise<HomeData> {
     try {
       const [ongoing, ongoingBooks, recentlyRead, onDeck, latestSeries] = await Promise.all([
-        this.fetchWithCache<LibraryResponse<KomgaSeries>>(
-          "home-ongoing",
-          async () =>
-            this.fetchFromApi<LibraryResponse<KomgaSeries>>({
-              path: "series",
-              params: {
-                read_status: "IN_PROGRESS",
-                sort: "readDate,desc",
-                page: "0",
-                size: "10",
-                media_status: "READY",
-              },
-            }),
-          "HOME"
-        ),
-        this.fetchWithCache<LibraryResponse<KomgaBook>>(
-          "home-ongoing-books",
-          async () =>
-            this.fetchFromApi<LibraryResponse<KomgaBook>>({
-              path: "books",
-              params: {
-                read_status: "IN_PROGRESS",
-                sort: "readProgress.readDate,desc",
-                page: "0",
-                size: "10",
-                media_status: "READY",
-              },
-            }),
-          "HOME"
-        ),
-        this.fetchWithCache<LibraryResponse<KomgaBook>>(
-          "home-recently-read",
-          async () =>
-            this.fetchFromApi<LibraryResponse<KomgaBook>>({
-              path: "books/latest",
-              params: {
-                page: "0",
-                size: "10",
-                media_status: "READY",
-              },
-            }),
-          "HOME"
-        ),
-        this.fetchWithCache<LibraryResponse<KomgaBook>>(
-          "home-on-deck",
-          async () =>
-            this.fetchFromApi<LibraryResponse<KomgaBook>>({
-              path: "books/ondeck",
-              params: {
-                page: "0",
-                size: "10",
-                media_status: "READY",
-              },
-            }),
-          "HOME"
-        ),
-        this.fetchWithCache<LibraryResponse<KomgaSeries>>(
-          "home-latest-series",
-          async () =>
-            this.fetchFromApi<LibraryResponse<KomgaSeries>>({
-              path: "series/latest",
-              params: {
-                page: "0",
-                size: "10",
-                media_status: "READY",
-              },
-            }),
-          "HOME"
-        ),
+        this.fetchFromApi<LibraryResponse<KomgaSeries>>({
+          path: "series",
+          params: {
+            read_status: "IN_PROGRESS",
+            sort: "readDate,desc",
+            page: "0",
+            size: "10",
+            media_status: "READY",
+          },
+        }),
+        this.fetchFromApi<LibraryResponse<KomgaBook>>({
+          path: "books",
+          params: {
+            read_status: "IN_PROGRESS",
+            sort: "readProgress.readDate,desc",
+            page: "0",
+            size: "10",
+            media_status: "READY",
+          },
+        }),
+        this.fetchFromApi<LibraryResponse<KomgaBook>>({
+          path: "books/latest",
+          params: {
+            page: "0",
+            size: "10",
+            media_status: "READY",
+          },
+        }),
+        this.fetchFromApi<LibraryResponse<KomgaBook>>({
+          path: "books/ondeck",
+          params: {
+            page: "0",
+            size: "10",
+            media_status: "READY",
+          },
+        }),
+        this.fetchFromApi<LibraryResponse<KomgaSeries>>({
+          path: "series/latest",
+          params: {
+            page: "0",
+            size: "10",
+            media_status: "READY",
+          },
+        }),
       ]);
 
       return {
         ongoing: ongoing.content || [],
-        ongoingBooks: ongoingBooks.content || [], // Nouveau champ
+        ongoingBooks: ongoingBooks.content || [],
         recentlyRead: recentlyRead.content || [],
         onDeck: onDeck.content || [],
         latestSeries: latestSeries.content || [],
@@ -97,17 +71,4 @@ export class HomeService extends BaseApiService {
       throw new AppError(ERROR_CODES.HOME.FETCH_ERROR, {}, error);
     }
   }
-
-  static async invalidateHomeCache(): Promise<void> {
-    try {
-      const cacheService = await getServerCacheService();
-      await cacheService.delete("home-ongoing");
-      await cacheService.delete("home-ongoing-books"); // Nouvelle clé de cache
-      await cacheService.delete("home-recently-read");
-      await cacheService.delete("home-on-deck");
-      await cacheService.delete("home-latest-series");
-    } catch (error) {
-      throw new AppError(ERROR_CODES.CACHE.DELETE_ERROR, {}, error);
-    }
-  }
 }
diff --git a/src/lib/services/library.service.ts b/src/lib/services/library.service.ts
index 20de65d..1427dbd 100644
--- a/src/lib/services/library.service.ts
+++ b/src/lib/services/library.service.ts
@@ -1,7 +1,6 @@
 import { BaseApiService } from "./base-api.service";
 import type { LibraryResponse } from "@/types/library";
 import type { Series } from "@/types/series";
-import { getServerCacheService } from "./server-cache.service";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
 import type { KomgaLibrary } from "@/types/komga";
@@ -9,11 +8,7 @@ import type { KomgaLibrary } from "@/types/komga";
 export class LibraryService extends BaseApiService {
   static async getLibraries(): Promise<KomgaLibrary[]> {
     try {
-      return this.fetchWithCache<KomgaLibrary[]>(
-        "libraries",
-        async () => this.fetchFromApi<KomgaLibrary[]>({ path: "libraries" }),
-        "LIBRARIES"
-      );
+      return this.fetchFromApi<KomgaLibrary[]>({ path: "libraries" });
     } catch (error) {
       throw new AppError(ERROR_CODES.LIBRARY.FETCH_ERROR, {}, error);
     }
@@ -87,35 +82,24 @@ export class LibraryService extends BaseApiService {
 
       const searchBody = { condition };
 
-      // Clé de cache incluant tous les paramètres
-      const cacheKey = `library-${libraryId}-series-p${page}-s${size}-u${unreadOnly}-q${
-        search || ""
-      }`;
+      const params: Record<string, string | string[]> = {
+        page: String(page),
+        size: String(size),
+        sort: "metadata.titleSort,asc",
+      };
 
-      const response = await this.fetchWithCache<LibraryResponse<Series>>(
-        cacheKey,
-        async () => {
-          const params: Record<string, string | string[]> = {
-            page: String(page),
-            size: String(size),
-            sort: "metadata.titleSort,asc",
-          };
+      // Filtre de recherche Komga (recherche dans le titre)
+      if (search) {
+        params.search = search;
+      }
 
-          // Filtre de recherche Komga (recherche dans le titre)
-          if (search) {
-            params.search = search;
-          }
-
-          return this.fetchFromApi<LibraryResponse<Series>>(
-            { path: "series/list", params },
-            headers,
-            {
-              method: "POST",
-              body: JSON.stringify(searchBody),
-            }
-          );
-        },
-        "SERIES"
+      const response = await this.fetchFromApi<LibraryResponse<Series>>(
+        { path: "series/list", params },
+        headers,
+        {
+          method: "POST",
+          body: JSON.stringify(searchBody),
+        }
       );
 
       // Filtrer uniquement les séries supprimées côté client (léger)
@@ -131,17 +115,6 @@ export class LibraryService extends BaseApiService {
     }
   }
 
-  static async invalidateLibrarySeriesCache(libraryId: string): Promise<void> {
-    try {
-      const cacheService = await getServerCacheService();
-      // Invalider toutes les clés de cache pour cette bibliothèque
-      // Format: library-{id}-series-p{page}-s{size}-u{unread}-q{search}
-      await cacheService.deleteAll(`library-${libraryId}-series-`);
-    } catch (error) {
-      throw new AppError(ERROR_CODES.CACHE.DELETE_ERROR, {}, error);
-    }
-  }
-
   static async scanLibrary(libraryId: string, deep: boolean = false): Promise<void> {
     try {
       await this.fetchFromApi(
diff --git a/src/lib/services/preferences.service.ts b/src/lib/services/preferences.service.ts
index 9bb6a3e..d80aeda 100644
--- a/src/lib/services/preferences.service.ts
+++ b/src/lib/services/preferences.service.ts
@@ -2,11 +2,7 @@ import prisma from "@/lib/prisma";
 import { getCurrentUser } from "../auth-utils";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
-import type {
-  UserPreferences,
-  BackgroundPreferences,
-  CircuitBreakerConfig,
-} from "@/types/preferences";
+import type { UserPreferences, BackgroundPreferences } from "@/types/preferences";
 import { defaultPreferences } from "@/types/preferences";
 import type { User } from "@/types/komga";
 import type { Prisma } from "@prisma/client";
@@ -37,7 +33,6 @@ export class PreferencesService {
 
       return {
         showThumbnails: preferences.showThumbnails,
-        cacheMode: preferences.cacheMode as "memory" | "file",
         showOnlyUnread: preferences.showOnlyUnread,
         displayMode: {
           ...defaultPreferences.displayMode,
@@ -45,9 +40,7 @@ export class PreferencesService {
           viewMode: displayMode?.viewMode || defaultPreferences.displayMode.viewMode,
         },
         background: preferences.background as unknown as BackgroundPreferences,
-        komgaMaxConcurrentRequests: preferences.komgaMaxConcurrentRequests,
         readerPrefetchCount: preferences.readerPrefetchCount,
-        circuitBreakerConfig: preferences.circuitBreakerConfig as unknown as CircuitBreakerConfig,
       };
     } catch (error) {
       if (error instanceof AppError) {
@@ -65,17 +58,12 @@ export class PreferencesService {
       const updateData: Record<string, any> = {};
       if (preferences.showThumbnails !== undefined)
         updateData.showThumbnails = preferences.showThumbnails;
-      if (preferences.cacheMode !== undefined) updateData.cacheMode = preferences.cacheMode;
       if (preferences.showOnlyUnread !== undefined)
         updateData.showOnlyUnread = preferences.showOnlyUnread;
       if (preferences.displayMode !== undefined) updateData.displayMode = preferences.displayMode;
       if (preferences.background !== undefined) updateData.background = preferences.background;
-      if (preferences.komgaMaxConcurrentRequests !== undefined)
-        updateData.komgaMaxConcurrentRequests = preferences.komgaMaxConcurrentRequests;
       if (preferences.readerPrefetchCount !== undefined)
         updateData.readerPrefetchCount = preferences.readerPrefetchCount;
-      if (preferences.circuitBreakerConfig !== undefined)
-        updateData.circuitBreakerConfig = preferences.circuitBreakerConfig;
 
       const updatedPreferences = await prisma.preferences.upsert({
         where: { userId },
@@ -83,28 +71,20 @@ export class PreferencesService {
         create: {
           userId,
           showThumbnails: preferences.showThumbnails ?? defaultPreferences.showThumbnails,
-          cacheMode: preferences.cacheMode ?? defaultPreferences.cacheMode,
           showOnlyUnread: preferences.showOnlyUnread ?? defaultPreferences.showOnlyUnread,
           displayMode: preferences.displayMode ?? defaultPreferences.displayMode,
           background: (preferences.background ??
             defaultPreferences.background) as unknown as Prisma.InputJsonValue,
-          circuitBreakerConfig: (preferences.circuitBreakerConfig ??
-            defaultPreferences.circuitBreakerConfig) as unknown as Prisma.InputJsonValue,
-          komgaMaxConcurrentRequests: preferences.komgaMaxConcurrentRequests ?? 5,
           readerPrefetchCount: preferences.readerPrefetchCount ?? 5,
         },
       });
 
       return {
         showThumbnails: updatedPreferences.showThumbnails,
-        cacheMode: updatedPreferences.cacheMode as "memory" | "file",
         showOnlyUnread: updatedPreferences.showOnlyUnread,
         displayMode: updatedPreferences.displayMode as UserPreferences["displayMode"],
         background: updatedPreferences.background as unknown as BackgroundPreferences,
-        komgaMaxConcurrentRequests: updatedPreferences.komgaMaxConcurrentRequests,
         readerPrefetchCount: updatedPreferences.readerPrefetchCount,
-        circuitBreakerConfig:
-          updatedPreferences.circuitBreakerConfig as unknown as CircuitBreakerConfig,
       };
     } catch (error) {
       if (error instanceof AppError) {
diff --git a/src/lib/services/request-monitor.service.ts b/src/lib/services/request-monitor.service.ts
deleted file mode 100644
index 1a4f9c3..0000000
--- a/src/lib/services/request-monitor.service.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-/**
- * Service de monitoring des requêtes concurrentes vers Komga
- * Permet de tracker le nombre de requêtes actives et d'alerter en cas de charge élevée
- */
-import logger from "@/lib/logger";
-
-class RequestMonitor {
-  private activeRequests = 0;
-  private readonly thresholds = {
-    warning: 10,
-    high: 20,
-    critical: 30,
-  };
-
-  incrementActive(): number {
-    this.activeRequests++;
-    this.checkThresholds();
-    return this.activeRequests;
-  }
-
-  decrementActive(): number {
-    this.activeRequests = Math.max(0, this.activeRequests - 1);
-    return this.activeRequests;
-  }
-
-  getActiveCount(): number {
-    return this.activeRequests;
-  }
-
-  private checkThresholds(): void {
-    const count = this.activeRequests;
-
-    if (count >= this.thresholds.critical) {
-      logger.warn(`[REQUEST-MONITOR] 🔴 CRITICAL concurrency: ${count} active requests`);
-    } else if (count >= this.thresholds.high) {
-      logger.warn(`[REQUEST-MONITOR] ⚠️  HIGH concurrency: ${count} active requests`);
-    } else if (count >= this.thresholds.warning) {
-      logger.info(`[REQUEST-MONITOR] ⚡ Warning concurrency: ${count} active requests`);
-    }
-  }
-}
-
-// Singleton instance
-export const RequestMonitorService = new RequestMonitor();
diff --git a/src/lib/services/request-queue.service.ts b/src/lib/services/request-queue.service.ts
deleted file mode 100644
index 7658b9c..0000000
--- a/src/lib/services/request-queue.service.ts
+++ /dev/null
@@ -1,109 +0,0 @@
-/**
- * Service de gestion de queue pour limiter les requêtes concurrentes vers Komga
- * Évite de surcharger Komga avec trop de requêtes simultanées
- */
-import logger from "@/lib/logger";
-
-interface QueuedRequest<T> {
-  execute: () => Promise<T>;
-  resolve: (value: T) => void;
-  reject: (error: any) => void;
-}
-
-class RequestQueue {
-  private queue: QueuedRequest<any>[] = [];
-  private activeCount = 0;
-  private maxConcurrent: number;
-  private getMaxConcurrent: (() => Promise<number>) | null = null;
-
-  constructor(maxConcurrent?: number) {
-    // Valeur par défaut
-    this.maxConcurrent = maxConcurrent ?? 5;
-  }
-
-  /**
-   * Configure une fonction pour récupérer dynamiquement le max concurrent depuis les préférences
-   */
-  setMaxConcurrentGetter(getter: () => Promise<number>): void {
-    this.getMaxConcurrent = getter;
-  }
-
-  /**
-   * Récupère la valeur de maxConcurrent, soit depuis les préférences, soit depuis la valeur fixe
-   */
-  private async getCurrentMaxConcurrent(): Promise<number> {
-    if (this.getMaxConcurrent) {
-      try {
-        return await this.getMaxConcurrent();
-      } catch (error) {
-        logger.error({ err: error }, "Error getting maxConcurrent from preferences, using default");
-        return this.maxConcurrent;
-      }
-    }
-    return this.maxConcurrent;
-  }
-
-  async enqueue<T>(execute: () => Promise<T>): Promise<T> {
-    return new Promise<T>((resolve, reject) => {
-      // Limiter la taille de la queue pour éviter l'accumulation
-      if (this.queue.length >= 50) {
-        reject(new Error("Request queue is full - Komga may be overloaded"));
-        return;
-      }
-
-      this.queue.push({ execute, resolve, reject });
-      this.processQueue();
-    });
-  }
-
-  private async delay(ms: number): Promise<void> {
-    return new Promise((resolve) => setTimeout(resolve, ms));
-  }
-
-  private async processQueue(): Promise<void> {
-    const maxConcurrent = await this.getCurrentMaxConcurrent();
-    if (this.activeCount >= maxConcurrent || this.queue.length === 0) {
-      return;
-    }
-
-    this.activeCount++;
-    const request = this.queue.shift();
-
-    if (!request) {
-      this.activeCount--;
-      return;
-    }
-
-    try {
-      // Délai adaptatif : plus long si la queue est pleine
-      // Désactivé en mode debug pour ne pas ralentir les tests
-      const isDebug = process.env.KOMGA_DEBUG === "true";
-      if (!isDebug) {
-        const delayMs = this.queue.length > 10 ? 500 : 200;
-        await this.delay(delayMs);
-      }
-      const result = await request.execute();
-      request.resolve(result);
-    } catch (error) {
-      request.reject(error);
-    } finally {
-      this.activeCount--;
-      this.processQueue();
-    }
-  }
-
-  getActiveCount(): number {
-    return this.activeCount;
-  }
-
-  getQueueLength(): number {
-    return this.queue.length;
-  }
-
-  setMaxConcurrent(max: number): void {
-    this.maxConcurrent = max;
-  }
-}
-
-// Singleton instance - Par défaut limite à 5 requêtes simultanées
-export const RequestQueueService = new RequestQueue(5);
diff --git a/src/lib/services/series.service.ts b/src/lib/services/series.service.ts
index 41190c5..f0d0d88 100644
--- a/src/lib/services/series.service.ts
+++ b/src/lib/services/series.service.ts
@@ -1,50 +1,27 @@
 import { BaseApiService } from "./base-api.service";
 import type { LibraryResponse } from "@/types/library";
-import type { KomgaBook, KomgaSeries, TTLConfig } from "@/types/komga";
+import type { KomgaBook, KomgaSeries } from "@/types/komga";
 import { BookService } from "./book.service";
 import type { ImageResponse } from "./image.service";
 import { ImageService } from "./image.service";
 import { PreferencesService } from "./preferences.service";
-import { ConfigDBService } from "./config-db.service";
-import { getServerCacheService } from "./server-cache.service";
 import { ERROR_CODES } from "../../constants/errorCodes";
 import { AppError } from "../../utils/errors";
 import type { UserPreferences } from "@/types/preferences";
-import type { ServerCacheService } from "./server-cache.service";
 import logger from "@/lib/logger";
 
+// Cache HTTP navigateur : 30 jours (immutable car les images ne changent pas)
+const IMAGE_CACHE_MAX_AGE = 2592000;
+
 export class SeriesService extends BaseApiService {
-  private static async getImageCacheMaxAge(): Promise<number> {
-    try {
-      const ttlConfig: TTLConfig | null = await ConfigDBService.getTTLConfig();
-      const maxAge = ttlConfig?.imageCacheMaxAge ?? 2592000;
-      return maxAge;
-    } catch (error) {
-      logger.error({ err: error }, "[ImageCache] Error fetching TTL config");
-      return 2592000; // 30 jours par défaut en cas d'erreur
-    }
-  }
   static async getSeries(seriesId: string): Promise<KomgaSeries> {
     try {
-      return this.fetchWithCache<KomgaSeries>(
-        `series-${seriesId}`,
-        async () => this.fetchFromApi<KomgaSeries>({ path: `series/${seriesId}` }),
-        "SERIES"
-      );
+      return this.fetchFromApi<KomgaSeries>({ path: `series/${seriesId}` });
     } catch (error) {
       throw new AppError(ERROR_CODES.SERIES.FETCH_ERROR, {}, error);
     }
   }
 
-  static async invalidateSeriesCache(seriesId: string): Promise<void> {
-    try {
-      const cacheService = await getServerCacheService();
-      await cacheService.delete(`series-${seriesId}`);
-    } catch (error) {
-      throw new AppError(ERROR_CODES.CACHE.DELETE_ERROR, {}, error);
-    }
-  }
-
   static async getSeriesBooks(
     seriesId: string,
     page: number = 0,
@@ -96,28 +73,19 @@ export class SeriesService extends BaseApiService {
 
       const searchBody = { condition };
 
-      // Clé de cache incluant tous les paramètres
-      const cacheKey = `series-${seriesId}-books-p${page}-s${size}-u${unreadOnly}`;
+      const params: Record<string, string | string[]> = {
+        page: String(page),
+        size: String(size),
+        sort: "number,asc",
+      };
 
-      const response = await this.fetchWithCache<LibraryResponse<KomgaBook>>(
-        cacheKey,
-        async () => {
-          const params: Record<string, string | string[]> = {
-            page: String(page),
-            size: String(size),
-            sort: "number,asc",
-          };
-
-          return this.fetchFromApi<LibraryResponse<KomgaBook>>(
-            { path: "books/list", params },
-            headers,
-            {
-              method: "POST",
-              body: JSON.stringify(searchBody),
-            }
-          );
-        },
-        "BOOKS"
+      const response = await this.fetchFromApi<LibraryResponse<KomgaBook>>(
+        { path: "books/list", params },
+        headers,
+        {
+          method: "POST",
+          body: JSON.stringify(searchBody),
+        }
       );
 
       // Filtrer uniquement les livres supprimés côté client (léger)
@@ -133,36 +101,17 @@ export class SeriesService extends BaseApiService {
     }
   }
 
-  static async invalidateSeriesBooksCache(seriesId: string): Promise<void> {
-    try {
-      const cacheService: ServerCacheService = await getServerCacheService();
-      // Invalider toutes les clés de cache pour cette série
-      // Format: series-{id}-books-p{page}-s{size}-u{unread}
-      await cacheService.deleteAll(`series-${seriesId}-books-`);
-    } catch (error) {
-      throw new AppError(ERROR_CODES.CACHE.DELETE_ERROR, {}, error);
-    }
-  }
-
   static async getFirstBook(seriesId: string): Promise<string> {
     try {
-      return this.fetchWithCache<string>(
-        `series-first-book-${seriesId}`,
-        async () => {
-          const data: LibraryResponse<KomgaBook> = await this.fetchFromApi<
-            LibraryResponse<KomgaBook>
-          >({
-            path: `series/${seriesId}/books`,
-            params: { page: "0", size: "1" },
-          });
-          if (!data.content || data.content.length === 0) {
-            throw new AppError(ERROR_CODES.SERIES.NO_BOOKS_FOUND);
-          }
+      const data: LibraryResponse<KomgaBook> = await this.fetchFromApi<LibraryResponse<KomgaBook>>({
+        path: `series/${seriesId}/books`,
+        params: { page: "0", size: "1" },
+      });
+      if (!data.content || data.content.length === 0) {
+        throw new AppError(ERROR_CODES.SERIES.NO_BOOKS_FOUND);
+      }
 
-          return data.content[0].id;
-        },
-        "SERIES"
-      );
+      return data.content[0].id;
     } catch (error) {
       logger.error({ err: error }, "Erreur lors de la récupération du premier livre");
       throw new AppError(ERROR_CODES.SERIES.FETCH_ERROR, {}, error);
@@ -173,7 +122,6 @@ export class SeriesService extends BaseApiService {
     try {
       // Récupérer les préférences de l'utilisateur
       const preferences: UserPreferences = await PreferencesService.getPreferences();
-      const maxAge = await this.getImageCacheMaxAge();
 
       // Si l'utilisateur préfère les vignettes, utiliser la miniature
       if (preferences.showThumbnails) {
@@ -181,7 +129,7 @@ export class SeriesService extends BaseApiService {
         return new Response(response.buffer.buffer as ArrayBuffer, {
           headers: {
             "Content-Type": response.contentType || "image/jpeg",
-            "Cache-Control": `public, max-age=${maxAge}, immutable`,
+            "Cache-Control": `public, max-age=${IMAGE_CACHE_MAX_AGE}, immutable`,
           },
         });
       }
diff --git a/src/lib/services/server-cache.service.ts b/src/lib/services/server-cache.service.ts
deleted file mode 100644
index 980d6ef..0000000
--- a/src/lib/services/server-cache.service.ts
+++ /dev/null
@@ -1,730 +0,0 @@
-import fs from "fs";
-import path from "path";
-import { PreferencesService } from "./preferences.service";
-import { getCurrentUser } from "../auth-utils";
-import logger from "@/lib/logger";
-
-export type CacheMode = "file" | "memory";
-
-interface CacheConfig {
-  mode: CacheMode;
-}
-
-class ServerCacheService {
-  private static instance: ServerCacheService;
-  private cacheDir: string;
-  private memoryCache: Map<string, { data: unknown; expiry: number }> = new Map();
-  private config: CacheConfig = {
-    mode: "memory",
-  };
-
-  // Configuration des temps de cache en millisecondes
-  private static readonly oneMinute = 1 * 60 * 1000;
-  private static readonly twoMinutes = 2 * 60 * 1000;
-  private static readonly fiveMinutes = 5 * 60 * 1000;
-  private static readonly tenMinutes = 10 * 60 * 1000;
-  private static readonly twentyFourHours = 24 * 60 * 60 * 1000;
-  private static readonly oneWeek = 7 * 24 * 60 * 60 * 1000;
-  private static readonly noCache = 0;
-
-  // Configuration des temps de cache
-  // Optimisé pour la pagination native Komga :
-  // - Listes paginées (SERIES, BOOKS) : TTL court (2 min) car données fraîches + progression utilisateur
-  // - Données agrégées (HOME) : TTL moyen (10 min) car plusieurs sources
-  // - Données statiques (LIBRARIES) : TTL long (24h) car changent rarement
-  // - Images : TTL très long (7 jours) car immuables
-  private static readonly DEFAULT_TTL = {
-    DEFAULT: ServerCacheService.fiveMinutes,
-    HOME: ServerCacheService.tenMinutes,
-    LIBRARIES: ServerCacheService.twentyFourHours,
-    SERIES: ServerCacheService.twoMinutes, // Listes paginées avec progression
-    BOOKS: ServerCacheService.twoMinutes, // Listes paginées avec progression
-    IMAGES: ServerCacheService.oneWeek,
-  };
-
-  private constructor() {
-    this.cacheDir = path.join(process.cwd(), ".cache");
-    this.ensureCacheDirectory();
-    this.cleanExpiredCache();
-    this.initializeCacheMode();
-  }
-
-  private async initializeCacheMode(): Promise<void> {
-    try {
-      const user = await getCurrentUser();
-      if (!user) {
-        this.setCacheMode("memory");
-        return;
-      }
-      const preferences = await PreferencesService.getPreferences();
-      this.setCacheMode(preferences.cacheMode);
-    } catch (error) {
-      logger.error({ err: error }, "Error initializing cache mode from preferences");
-      // Keep default memory mode if preferences can't be loaded
-    }
-  }
-
-  private ensureCacheDirectory(): void {
-    if (!fs.existsSync(this.cacheDir)) {
-      fs.mkdirSync(this.cacheDir, { recursive: true });
-    }
-  }
-
-  private getCacheFilePath(key: string): string {
-    // Nettoyer la clé des caractères spéciaux et des doubles slashes
-    const sanitizedKey = key.replace(/[<>:"|?*]/g, "_").replace(/\/+/g, "/");
-
-    const filePath = path.join(this.cacheDir, `${sanitizedKey}.json`);
-
-    return filePath;
-  }
-
-  private cleanExpiredCache(): void {
-    if (!fs.existsSync(this.cacheDir)) return;
-
-    const cleanDirectory = (dirPath: string): boolean => {
-      if (!fs.existsSync(dirPath)) return true;
-
-      const items = fs.readdirSync(dirPath);
-      let isEmpty = true;
-
-      for (const item of items) {
-        const itemPath = path.join(dirPath, item);
-
-        try {
-          const stats = fs.statSync(itemPath);
-
-          if (stats.isDirectory()) {
-            const isSubDirEmpty = cleanDirectory(itemPath);
-            if (isSubDirEmpty) {
-              try {
-                fs.rmdirSync(itemPath);
-              } catch (error) {
-                logger.error(
-                  { err: error, path: itemPath },
-                  `Could not remove directory ${itemPath}`
-                );
-                isEmpty = false;
-              }
-            } else {
-              isEmpty = false;
-            }
-          } else if (stats.isFile() && item.endsWith(".json")) {
-            try {
-              const content = fs.readFileSync(itemPath, "utf-8");
-              const cached = JSON.parse(content);
-              if (cached.expiry < Date.now()) {
-                fs.unlinkSync(itemPath);
-              } else {
-                isEmpty = false;
-              }
-            } catch (error) {
-              logger.error({ err: error, path: itemPath }, `Could not parse file ${itemPath}`);
-              // Si le fichier est corrompu, on le supprime
-              try {
-                fs.unlinkSync(itemPath);
-              } catch (error) {
-                logger.error({ err: error, path: itemPath }, `Could not remove file ${itemPath}`);
-                isEmpty = false;
-              }
-            }
-          } else {
-            isEmpty = false;
-          }
-        } catch (error) {
-          logger.error({ err: error, path: itemPath }, `Could not access ${itemPath}`);
-          // En cas d'erreur sur le fichier/dossier, on continue
-          isEmpty = false;
-          continue;
-        }
-      }
-
-      return isEmpty;
-    };
-
-    cleanDirectory(this.cacheDir);
-  }
-
-  public static async getInstance(): Promise<ServerCacheService> {
-    if (!ServerCacheService.instance) {
-      ServerCacheService.instance = new ServerCacheService();
-      await ServerCacheService.instance.initializeCacheMode();
-    }
-    return ServerCacheService.instance;
-  }
-
-  /**
-   * Retourne le TTL pour un type de données spécifique
-   */
-  public getTTL(type: keyof typeof ServerCacheService.DEFAULT_TTL): number {
-    // Utiliser directement la valeur par défaut
-    return ServerCacheService.DEFAULT_TTL[type];
-  }
-
-  public setCacheMode(mode: CacheMode): void {
-    if (this.config.mode === mode) return;
-
-    // Si on passe de mémoire à fichier, on sauvegarde le cache en mémoire
-    if (mode === "file" && this.config.mode === "memory") {
-      this.memoryCache.forEach((value, key) => {
-        if (value.expiry > Date.now()) {
-          this.saveToFile(key, value);
-        }
-      });
-      this.memoryCache.clear();
-    }
-    // Si on passe de fichier à mémoire, on charge le cache fichier en mémoire
-    else if (mode === "memory" && this.config.mode === "file") {
-      this.loadFileCacheToMemory();
-    }
-
-    this.config.mode = mode;
-  }
-
-  public getCacheMode(): CacheMode {
-    return this.config.mode;
-  }
-
-  private loadFileCacheToMemory(): void {
-    if (!fs.existsSync(this.cacheDir)) return;
-
-    const loadDirectory = (dirPath: string) => {
-      const items = fs.readdirSync(dirPath);
-
-      for (const item of items) {
-        const itemPath = path.join(dirPath, item);
-        try {
-          const stats = fs.statSync(itemPath);
-
-          if (stats.isDirectory()) {
-            loadDirectory(itemPath);
-          } else if (stats.isFile() && item.endsWith(".json")) {
-            try {
-              const content = fs.readFileSync(itemPath, "utf-8");
-              const cached = JSON.parse(content);
-              if (cached.expiry > Date.now()) {
-                const key = path.relative(this.cacheDir, itemPath).slice(0, -5); // Remove .json
-                this.memoryCache.set(key, cached);
-              }
-            } catch (error) {
-              logger.error({ err: error, path: itemPath }, `Could not parse file ${itemPath}`);
-              // Ignore les fichiers corrompus
-            }
-          }
-        } catch (error) {
-          logger.error({ err: error, path: itemPath }, `Could not access ${itemPath}`);
-          // Ignore les erreurs d'accès
-        }
-      }
-    };
-
-    loadDirectory(this.cacheDir);
-  }
-
-  private saveToFile(key: string, value: { data: unknown; expiry: number }): void {
-    const filePath = this.getCacheFilePath(key);
-    const dirPath = path.dirname(filePath);
-
-    try {
-      if (!fs.existsSync(dirPath)) {
-        fs.mkdirSync(dirPath, { recursive: true });
-      }
-      fs.writeFileSync(filePath, JSON.stringify(value), "utf-8");
-    } catch (error) {
-      logger.error({ err: error, path: filePath }, `Could not write cache file ${filePath}`);
-    }
-  }
-
-  /**
-   * Met en cache des données avec une durée de vie
-   */
-  set(key: string, data: any, type: keyof typeof ServerCacheService.DEFAULT_TTL = "DEFAULT"): void {
-    const cacheData = {
-      data,
-      expiry: Date.now() + this.getTTL(type),
-    };
-
-    if (this.config.mode === "memory") {
-      this.memoryCache.set(key, cacheData);
-    } else {
-      const filePath = this.getCacheFilePath(key);
-      const dirPath = path.dirname(filePath);
-
-      try {
-        if (!fs.existsSync(dirPath)) {
-          fs.mkdirSync(dirPath, { recursive: true });
-        }
-        fs.writeFileSync(filePath, JSON.stringify(cacheData), "utf-8");
-      } catch (error) {
-        logger.error({ err: error, path: filePath }, `Error writing cache file ${filePath}`);
-      }
-    }
-  }
-
-  /**
-   * Récupère des données du cache si elles sont valides
-   */
-  get(key: string): any | null {
-    if (this.config.mode === "memory") {
-      const cached = this.memoryCache.get(key);
-      if (!cached) return null;
-
-      if (cached.expiry > Date.now()) {
-        return cached.data;
-      }
-
-      this.memoryCache.delete(key);
-      return null;
-    }
-
-    const filePath = this.getCacheFilePath(key);
-    if (!fs.existsSync(filePath)) {
-      return null;
-    }
-
-    try {
-      const content = fs.readFileSync(filePath, "utf-8");
-      const cached = JSON.parse(content);
-
-      if (cached.expiry > Date.now()) {
-        return cached.data;
-      }
-
-      fs.unlinkSync(filePath);
-      return null;
-    } catch (error) {
-      logger.error({ err: error, path: filePath }, `Error reading cache file ${filePath}`);
-      return null;
-    }
-  }
-
-  /**
-   * Récupère des données du cache même si elles sont expirées (stale)
-   * Retourne { data, isStale } ou null si pas de cache
-   */
-  private getStale(key: string): { data: any; isStale: boolean } | null {
-    if (this.config.mode === "memory") {
-      const cached = this.memoryCache.get(key);
-      if (!cached) return null;
-
-      return {
-        data: cached.data,
-        isStale: cached.expiry <= Date.now(),
-      };
-    }
-
-    const filePath = this.getCacheFilePath(key);
-    if (!fs.existsSync(filePath)) {
-      return null;
-    }
-
-    try {
-      const content = fs.readFileSync(filePath, "utf-8");
-      const cached = JSON.parse(content);
-
-      return {
-        data: cached.data,
-        isStale: cached.expiry <= Date.now(),
-      };
-    } catch (error) {
-      logger.error({ err: error, path: filePath }, `Error reading cache file ${filePath}`);
-      return null;
-    }
-  }
-
-  /**
-   * Supprime une entrée du cache
-   */
-  async delete(key: string): Promise<void> {
-    const user = await getCurrentUser();
-    if (!user) {
-      throw new Error("Utilisateur non authentifié");
-    }
-    const cacheKey = `${user.id}-${key}`;
-
-    if (this.config.mode === "memory") {
-      this.memoryCache.delete(cacheKey);
-    } else {
-      const filePath = this.getCacheFilePath(cacheKey);
-      if (fs.existsSync(filePath)) {
-        fs.unlinkSync(filePath);
-      }
-    }
-  }
-
-  /**
-   * Supprime toutes les entrées du cache qui commencent par un préfixe
-   */
-  async deleteAll(prefix: string): Promise<void> {
-    const user = await getCurrentUser();
-    if (!user) {
-      throw new Error("Utilisateur non authentifié");
-    }
-    const prefixKey = `${user.id}-${prefix}`;
-
-    if (this.config.mode === "memory") {
-      this.memoryCache.forEach((value, key) => {
-        if (key.startsWith(prefixKey)) {
-          this.memoryCache.delete(key);
-        }
-      });
-    } else {
-      // En mode fichier, parcourir récursivement tous les fichiers et supprimer ceux qui correspondent
-      if (!fs.existsSync(this.cacheDir)) return;
-
-      const deleteMatchingFiles = (dirPath: string): void => {
-        const items = fs.readdirSync(dirPath);
-
-        for (const item of items) {
-          const itemPath = path.join(dirPath, item);
-          try {
-            const stats = fs.statSync(itemPath);
-
-            if (stats.isDirectory()) {
-              deleteMatchingFiles(itemPath);
-              // Supprimer le répertoire s'il est vide après suppression des fichiers
-              try {
-                const remainingItems = fs.readdirSync(itemPath);
-                if (remainingItems.length === 0) {
-                  fs.rmdirSync(itemPath);
-                }
-              } catch {
-                // Ignore les erreurs de suppression de répertoire
-              }
-            } else if (stats.isFile() && item.endsWith(".json")) {
-              // Extraire la clé du chemin relatif (sans l'extension .json)
-              const relativePath = path.relative(this.cacheDir, itemPath);
-              const key = relativePath.slice(0, -5).replace(/\\/g, "/"); // Remove .json and normalize slashes
-
-              if (key.startsWith(prefixKey)) {
-                fs.unlinkSync(itemPath);
-                if (process.env.CACHE_DEBUG === "true") {
-                  logger.debug(`🗑️ [CACHE DELETE] ${key}`);
-                }
-              }
-            }
-          } catch (error) {
-            logger.error({ err: error, path: itemPath }, `Could not delete cache file ${itemPath}`);
-          }
-        }
-      };
-
-      deleteMatchingFiles(this.cacheDir);
-    }
-  }
-
-  /**
-   * Vide le cache
-   */
-  clear(): void {
-    if (this.config.mode === "memory") {
-      this.memoryCache.clear();
-      return;
-    }
-
-    if (!fs.existsSync(this.cacheDir)) return;
-
-    const removeDirectory = (dirPath: string) => {
-      if (!fs.existsSync(dirPath)) return;
-
-      const items = fs.readdirSync(dirPath);
-
-      for (const item of items) {
-        const itemPath = path.join(dirPath, item);
-        try {
-          const stats = fs.statSync(itemPath);
-
-          if (stats.isDirectory()) {
-            removeDirectory(itemPath);
-            try {
-              fs.rmdirSync(itemPath);
-            } catch (error) {
-              logger.error(
-                { err: error, path: itemPath },
-                `Could not remove directory ${itemPath}`
-              );
-            }
-          } else {
-            try {
-              fs.unlinkSync(itemPath);
-            } catch (error) {
-              logger.error({ err: error, path: itemPath }, `Could not remove file ${itemPath}`);
-            }
-          }
-        } catch (error) {
-          logger.error({ err: error, path: itemPath }, `Error accessing ${itemPath}`);
-        }
-      }
-    };
-
-    try {
-      removeDirectory(this.cacheDir);
-    } catch (error) {
-      logger.error({ err: error }, "Error clearing cache");
-    }
-  }
-
-  /**
-   * Récupère des données du cache ou exécute la fonction si nécessaire
-   * Stratégie stale-while-revalidate:
-   * - Cache valide → retourne immédiatement
-   * - Cache expiré → retourne le cache expiré ET revalide en background
-   * - Pas de cache → fetch normalement
-   */
-  async getOrSet<T>(
-    key: string,
-    fetcher: () => Promise<T>,
-    type: keyof typeof ServerCacheService.DEFAULT_TTL = "DEFAULT"
-  ): Promise<T> {
-    const startTime = performance.now();
-    const user = await getCurrentUser();
-    if (!user) {
-      throw new Error("Utilisateur non authentifié");
-    }
-
-    const cacheKey = `${user.id}-${key}`;
-    const cachedResult = this.getStale(cacheKey);
-
-    if (cachedResult !== null) {
-      const { data, isStale } = cachedResult;
-      const endTime = performance.now();
-
-      // Debug logging
-      if (process.env.CACHE_DEBUG === "true") {
-        const icon = isStale ? "⚠️" : "✅";
-        const status = isStale ? "STALE" : "HIT";
-        logger.debug(
-          `${icon} [CACHE ${status}] ${key} | ${type} | ${(endTime - startTime).toFixed(2)}ms`
-        );
-      }
-
-      // Si le cache est expiré, revalider en background sans bloquer la réponse
-      if (isStale) {
-        // Fire and forget - revalidate en background
-        this.revalidateInBackground(cacheKey, fetcher, type, key);
-      }
-
-      return data as T;
-    }
-
-    // Pas de cache du tout, fetch normalement
-    if (process.env.CACHE_DEBUG === "true") {
-      logger.debug(`❌ [CACHE MISS] ${key} | ${type}`);
-    }
-
-    try {
-      const data = await fetcher();
-      this.set(cacheKey, data, type);
-
-      const endTime = performance.now();
-      if (process.env.CACHE_DEBUG === "true") {
-        logger.debug(`💾 [CACHE SET] ${key} | ${type} | ${(endTime - startTime).toFixed(2)}ms`);
-      }
-
-      return data;
-    } catch (error) {
-      throw error;
-    }
-  }
-
-  /**
-   * Revalide le cache en background
-   */
-  private async revalidateInBackground<T>(
-    cacheKey: string,
-    fetcher: () => Promise<T>,
-    type: keyof typeof ServerCacheService.DEFAULT_TTL,
-    debugKey: string
-  ): Promise<void> {
-    try {
-      const startTime = performance.now();
-      const data = await fetcher();
-      this.set(cacheKey, data, type);
-
-      if (process.env.CACHE_DEBUG === "true") {
-        const endTime = performance.now();
-        logger.debug(
-          `🔄 [CACHE REVALIDATE] ${debugKey} | ${type} | ${(endTime - startTime).toFixed(2)}ms`
-        );
-      }
-    } catch (error) {
-      logger.error({ err: error, key: debugKey }, `🔴 [CACHE REVALIDATE ERROR] ${debugKey}`);
-      // Ne pas relancer l'erreur car c'est en background
-    }
-  }
-
-  invalidate(key: string): void {
-    this.delete(key);
-  }
-
-  /**
-   * Calcule la taille approximative d'un objet en mémoire
-   */
-  private calculateObjectSize(obj: unknown): number {
-    if (obj === null || obj === undefined) return 0;
-
-    // Si c'est un Buffer, utiliser sa taille réelle
-    if (Buffer.isBuffer(obj)) {
-      return obj.length;
-    }
-
-    // Si c'est un objet avec une propriété buffer (comme ImageResponse)
-    if (typeof obj === "object" && obj !== null) {
-      const objAny = obj as any;
-      if (objAny.buffer && Buffer.isBuffer(objAny.buffer)) {
-        // Taille du buffer + taille approximative des autres propriétés
-        let size = objAny.buffer.length;
-        // Ajouter la taille du contentType si présent
-        if (objAny.contentType && typeof objAny.contentType === "string") {
-          size += objAny.contentType.length * 2; // UTF-16
-        }
-        return size;
-      }
-    }
-
-    // Pour les autres types, utiliser JSON.stringify comme approximation
-    try {
-      return JSON.stringify(obj).length * 2; // x2 pour UTF-16
-    } catch {
-      // Si l'objet n'est pas sérialisable, retourner une estimation
-      return 1000; // 1KB par défaut
-    }
-  }
-
-  /**
-   * Calcule la taille du cache
-   */
-  async getCacheSize(): Promise<{ sizeInBytes: number; itemCount: number }> {
-    if (this.config.mode === "memory") {
-      // Calculer la taille approximative en mémoire
-      let sizeInBytes = 0;
-      let itemCount = 0;
-
-      this.memoryCache.forEach((value) => {
-        if (value.expiry > Date.now()) {
-          itemCount++;
-          // Calculer la taille du data + expiry (8 bytes pour le timestamp)
-          sizeInBytes += this.calculateObjectSize(value.data) + 8;
-        }
-      });
-
-      return { sizeInBytes, itemCount };
-    }
-
-    // Calculer la taille du cache sur disque
-    let sizeInBytes = 0;
-    let itemCount = 0;
-
-    const calculateDirectorySize = (dirPath: string): void => {
-      if (!fs.existsSync(dirPath)) return;
-
-      const items = fs.readdirSync(dirPath);
-
-      for (const item of items) {
-        const itemPath = path.join(dirPath, item);
-        try {
-          const stats = fs.statSync(itemPath);
-
-          if (stats.isDirectory()) {
-            calculateDirectorySize(itemPath);
-          } else if (stats.isFile() && item.endsWith(".json")) {
-            sizeInBytes += stats.size;
-            itemCount++;
-          }
-        } catch (error) {
-          logger.error({ err: error, path: itemPath }, `Could not access ${itemPath}`);
-        }
-      }
-    };
-
-    if (fs.existsSync(this.cacheDir)) {
-      calculateDirectorySize(this.cacheDir);
-    }
-
-    return { sizeInBytes, itemCount };
-  }
-
-  /**
-   * Liste les entrées du cache avec leurs détails
-   */
-  async getCacheEntries(): Promise<
-    Array<{
-      key: string;
-      size: number;
-      expiry: number;
-      isExpired: boolean;
-    }>
-  > {
-    const entries: Array<{
-      key: string;
-      size: number;
-      expiry: number;
-      isExpired: boolean;
-    }> = [];
-
-    if (this.config.mode === "memory") {
-      this.memoryCache.forEach((value, key) => {
-        const size = this.calculateObjectSize(value.data) + 8;
-        entries.push({
-          key,
-          size,
-          expiry: value.expiry,
-          isExpired: value.expiry <= Date.now(),
-        });
-      });
-    } else {
-      const collectEntries = (dirPath: string): void => {
-        if (!fs.existsSync(dirPath)) return;
-
-        const items = fs.readdirSync(dirPath);
-
-        for (const item of items) {
-          const itemPath = path.join(dirPath, item);
-          try {
-            const stats = fs.statSync(itemPath);
-
-            if (stats.isDirectory()) {
-              collectEntries(itemPath);
-            } else if (stats.isFile() && item.endsWith(".json")) {
-              try {
-                const content = fs.readFileSync(itemPath, "utf-8");
-                const cached = JSON.parse(content);
-                const key = path.relative(this.cacheDir, itemPath).slice(0, -5);
-
-                entries.push({
-                  key,
-                  size: stats.size,
-                  expiry: cached.expiry,
-                  isExpired: cached.expiry <= Date.now(),
-                });
-              } catch (error) {
-                logger.error({ err: error, path: itemPath }, `Could not parse file ${itemPath}`);
-              }
-            }
-          } catch (error) {
-            logger.error({ err: error, path: itemPath }, `Could not access ${itemPath}`);
-          }
-        }
-      };
-
-      if (fs.existsSync(this.cacheDir)) {
-        collectEntries(this.cacheDir);
-      }
-    }
-
-    return entries.sort((a, b) => b.expiry - a.expiry);
-  }
-}
-
-// Créer une instance initialisée du service
-let initializedInstance: Promise<ServerCacheService>;
-
-export const getServerCacheService = async (): Promise<ServerCacheService> => {
-  if (!initializedInstance) {
-    initializedInstance = ServerCacheService.getInstance();
-  }
-  return initializedInstance;
-};
-
-// Exporter aussi la classe pour les tests
-export { ServerCacheService };
diff --git a/src/lib/utils/image-url.ts b/src/lib/utils/image-url.ts
index 6899c30..899a56f 100644
--- a/src/lib/utils/image-url.ts
+++ b/src/lib/utils/image-url.ts
@@ -1,6 +1,5 @@
 /**
- * Génère l'URL de base pour une image (sans cache version)
- * Utilisez useImageUrl() dans les composants pour obtenir l'URL avec cache busting
+ * Génère l'URL pour une image (thumbnail de série ou de livre)
  */
 export function getImageUrl(type: "series" | "book", id: string) {
   if (type === "series") {
diff --git a/src/types/cache.ts b/src/types/cache.ts
deleted file mode 100644
index 7b5735d..0000000
--- a/src/types/cache.ts
+++ /dev/null
@@ -1 +0,0 @@
-export type CacheType = "DEFAULT" | "HOME" | "LIBRARIES" | "SERIES" | "BOOKS" | "IMAGES";
diff --git a/src/types/komga.ts b/src/types/komga.ts
index 553494f..5ee71e6 100644
--- a/src/types/komga.ts
+++ b/src/types/komga.ts
@@ -15,20 +15,6 @@ export interface KomgaConfig extends KomgaConfigData {
   userId: number;
 }
 
-export interface TTLConfigData {
-  defaultTTL: number;
-  homeTTL: number;
-  librariesTTL: number;
-  seriesTTL: number;
-  booksTTL: number;
-  imagesTTL: number;
-  imageCacheMaxAge: number; // en secondes
-}
-
-export interface TTLConfig extends TTLConfigData {
-  userId: number;
-}
-
 // Types liés à l'API Komga
 export interface KomgaUser {
   id: string;
diff --git a/src/types/preferences.ts b/src/types/preferences.ts
index e271aad..dde30d6 100644
--- a/src/types/preferences.ts
+++ b/src/types/preferences.ts
@@ -9,15 +9,8 @@ export interface BackgroundPreferences {
   komgaLibraries?: string[]; // IDs des bibliothèques Komga sélectionnées
 }
 
-export interface CircuitBreakerConfig {
-  threshold?: number;
-  timeout?: number;
-  resetTimeout?: number;
-}
-
 export interface UserPreferences {
   showThumbnails: boolean;
-  cacheMode: "memory" | "file";
   showOnlyUnread: boolean;
   displayMode: {
     compact: boolean;
@@ -25,14 +18,11 @@ export interface UserPreferences {
     viewMode: "grid" | "list";
   };
   background: BackgroundPreferences;
-  komgaMaxConcurrentRequests: number;
   readerPrefetchCount: number;
-  circuitBreakerConfig: CircuitBreakerConfig;
 }
 
 export const defaultPreferences: UserPreferences = {
   showThumbnails: true,
-  cacheMode: "memory",
   showOnlyUnread: false,
   displayMode: {
     compact: false,
@@ -44,13 +34,7 @@ export const defaultPreferences: UserPreferences = {
     opacity: 10,
     blur: 0,
   },
-  komgaMaxConcurrentRequests: 5,
   readerPrefetchCount: 5,
-  circuitBreakerConfig: {
-    threshold: 5,
-    timeout: 30000,
-    resetTimeout: 60000,
-  },
 };
 
 // Dégradés prédéfinis