- Clean up stale metadata when Cache API doesn't have cached data
- Handle online/offline state properly in image loading
- Show original URL when online, blob URL from cache when offline
- Prevent cache misses when browser clears Cache API on hard reload
BREAKING CHANGE: Image cache now uses Cache API instead of localStorage
Benefits:
- Support for actual 210MB cache size (localStorage limited to 5-10MB)
- Store native Response objects (no base64 overhead)
- Asynchronous, non-blocking operations
- Better suited for large binary blobs like images
- Can handle hundreds of MB to several GB
Changes:
- Rewrite imageCacheService to use Cache API for image storage
- Keep metadata in localStorage for LRU tracking (small footprint)
- Update useImageCache hook to handle async Cache API
- Add blob URL cleanup to prevent memory leaks
- Update clearImageCache to async function
The cache now works as advertised and won't hit quota limits.
- Add imageCacheService with localStorage-based image caching and LRU eviction
- Create useImageCache hook for React components to fetch and cache images
- Integrate image caching with article service to cache cover images on load
- Add image cache settings (enable/disable, size limit) to user settings
- Update ReaderHeader to use cached images for article covers
- Update BookmarkViews (CardView, LargeView) to use cached images
- Add image cache configuration UI in OfflineModeSettings with:
- Toggle to enable/disable image caching
- Slider to set cache size limit (10-200 MB)
- Display current cache stats (size and image count)
- Clear cache button
Images are cached in localStorage for offline viewing, with a configurable
size limit (default 50MB). LRU eviction ensures cache stays within limits.
