Advanced Caching Strategies

This skill provides guidance on designing and implementing multi-layered caching strategies across the full application stack (CDN, browser, server, database) to minimize latency, reduce server load, and improve overall application resilience and user experience.

The Cache Hierarchy

Caching can be implemented at multiple layers, from closest to the user to closest to the data source:

1. Browser Cache: Client-side caching (HTTP caching, LocalStorage, IndexedDB)
2. CDN Edge Cache: Geographically distributed caching (Vercel Edge, CloudFront, Cloudflare)
3. Server-Side Cache: Application-level caching (Redis, in-memory)
4. Database Cache: Query result caching, connection pooling

Goal: Serve content from the closest, fastest cache layer possible.

Browser Caching

Browser caching reduces network requests by storing resources locally.