The Algorithm Mastery Series ( part 7 )

🚀 Caching & CDN Algorithms: Making the Web Instant Part 6: From Database Queries to Edge Computing "The fastest request is the one you never make. The second fastest is the one served from memory." After mastering time-space trade-offs , algorithm design , graphs , production systems , and database internals , you're ready for the layer that makes the modern web feel instant: caching and content delivery . 🌍 The Caching Reality The Problem: Your website without caching: ├─ User clicks → Request to origin server (500ms) ├─ Query database → B-tree lookup (50ms) ├─ Process data → Business logic (100ms) ├─ Return response → Network latency (200ms) └─ Total time: 850ms per request 😴 Your website WITH caching: ├─ User clicks → Check cache (5ms) ├─ Cache hit! → Return immediately └─ Total time: 5ms per request ⚡ Speedup: 170x faster! The Stakes: Without caching: With intelligent caching: ├─ Database: 10k queries/sec ├─ Database: 100 queries/sec ├─ 95% load on DB ├─ 5% load on DB (95% cache hi