API Response Caching and Compression
Speed up backend responses with in-memory and distributed caching layers, smart cache invalidation, and payload reduction so servers do less work per request.
Why Cache on the Backend?
Recomputing the same response for every request wastes CPU and database time. Caching stores computed results so repeat requests return instantly, cutting both latency and load.
Layers of Caching
- In-process memory fastest, but per-instance.
- Distributed cache (Redis/Memcached) shared across servers.
- HTTP/CDN cache at the edge.
All lessons in this course
- Backend Performance Bottlenecks
- Database Query Optimization
- Server-Side Rendering (SSR) Impact
- API Response Caching and Compression