Caching Strategies That Actually Work in...

The Cache Taxonomy Not all caches are the same. Choosing the wrong one is worse than no cache at all. 1. In-Process Memory Cache Fastest possible. Zero network hops. Lives in your Node.js process. import NodeCache from 'node-cache'; const cache = new NodeCache({ stdTTL: 300, // 5 minutes default checkperiod: 60, // cleanup every 60s maxKeys: 1000, // prevent unbounded growth }); async function getUser(userId: string): Promise<User> { const cacheKey = `user:${userId}`; const cached = cache.get<Us