Cache-aside with Redis: the easy part is the lookup
Follow a cache hit and miss, then work through invalidation, stale data, and the race conditions hiding between them.
Caching patterns.
Design caching behavior around correctness, freshness, and failure.
Put it into practice.
Guides & tutorialsExpiration and eviction are two different promises
A TTL controls freshness over time. An eviction policy controls what happens under memory pressure. Your cache needs both decisions.