* fix: sync pasted/uploaded images across collaborating tabs
- Implement file delta synchronization to broadcast image file data
- Add periodic file sync check to catch async file data arrival
- Wrap Excalidraw addFiles API to automatically emit file changes
- Enhance socket element-update to include file payloads
- Add comprehensive E2E test for image collaboration scenarios
- Improve CORS flexibility for development localhost ports
Fixes#25: New images not appearing when collaborating - collaborators
now see uploaded images immediately instead of placeholder until refresh.
* perf: increase file sync polling interval from 500ms to 1000ms
Reduces CPU overhead while still catching async file arrivals. Most
updates go through the addFiles wrapper anyway.
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Co-authored-by: Zimeng Xiong <[email protected]>
- Improve cache key generation using JSON.stringify for consistent formatting
- Add promise deduplication in DrawingCard to prevent redundant API calls for full drawing data
- Clear full data state when drawing ID changes to ensure fresh data loading
- Fix async cache invalidation in drawing update and collection delete endpoints
- Move cache invalidation after database operations in SQLite import endpoint
- Add HydratedDrawingData type for better type safety in drawing data management
- Moved BACKEND_URL configuration to the frontend service in the README.
- Added validation for the generated nginx configuration in the entrypoint script.
- Removed fallback nginx configuration copy from the Dockerfile.
- Adjusted nginx template to ensure proper header formatting.
This improves the deployment process and clarifies configuration instructions.
- Add 5s in-memory cache for /drawings responses with automatic cleanup
- Split Drawing/DrawingSummary types for efficient data fetching
- Implement lazy loading of drawing data in DrawingCard component
- Add configurable DRAWINGS_CACHE_TTL_MS and RATE_LIMIT_MAX_REQUESTS env vars
- Prevent memory leaks with periodic cleanup of cache and rate limit maps
- Add loading states and better UX for export operations
- Improve JSON parsing with error handling for malformed stored data
Benchmark results (100 drawings, cached):
- Avg latency: 6.94ms (p50: 4ms, p97.5: 8ms)
- Avg throughput: 668 req/s (peak: 1,023)
- 3k requests in 5s with 0 errors
Update .gitignore to exclude generated files, env files, and build artifacts
- Added BACKEND_URL environment variable to docker-compose for frontend service.
- Introduced a new entrypoint script to configure nginx with the BACKEND_URL at runtime.
- Created a template for nginx configuration to handle API and WebSocket requests dynamically.
- Updated README with instructions for configuring reverse proxy setups.
Fixes#12
