caching
5 free lessons tagged caching across Programming, Computer Science, AI. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
Caching Strategies
Understand where caches live, how cache-aside, read-through, write-through, and write-back differ, how to choose eviction policies, and how to prevent cache stampedes — with hit ratio math and a concrete cache-aside code snippet.
CDNs Explained
Why your assets should never come from your origin. How a CDN's edge cache, geographic routing, and invalidation actually work, plus the cases where a CDN doesn't help (or quietly hurts).
Caching Strategies
The named caching patterns (cache-aside, read-through, write-through, write-behind), when each makes sense, and the failure modes that bite even experienced teams (thundering herd, stale invalidation, the second-hardest problem).
Caching for LLM systems: three layers, in order of leverage
How to cut LLM bills 50-90% without sacrificing freshness. Covers the three caching layers (response, prefix, semantic), what each costs to build, and the cases where caching subtly breaks correctness.
Redis: Fundamentals of an In-Memory Data Store
Explore Redis, a powerful open-source in-memory data store. Learn its core concepts, why it's used, its versatile data structures, and how it delivers blazing-fast performance for caching, real-time analytics, and more.