1. Fix cache name mismatch: imageCacheService now uses 'boris-images'
to match the Service Worker cache name
2. Remove cross-origin restriction: Cache ALL images, not just
cross-origin ones. This ensures article images from any source
are cached by the Service Worker
3. Update comments to clarify Service Worker caching behavior
Images should now be properly cached when loaded via <img> tags.
- Remove complex Cache API management with blob URLs and metadata
- useImageCache now simply returns the URL (Service Worker handles caching)
- imageCacheService reduced to just stats and clear functions
- Service Worker automatically caches all images on fetch
- Much simpler, DRY code that 'just works' for offline mode
- Stats now read directly from Cache API instead of localStorage metadata
- 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.
