Performance
Build a URL Shortener from Scratch — Part 4: Redis Caching for Fast Redirects
Part 4: Add Redis caching to the URL shortener for sub-millisecond redirects. Implement cache-aside pattern with read-through and write-through strategies.
How to Master PostgreSQL Indexing: B-Tree, Composite, and Partial Indexes
Learn PostgreSQL indexing with B-tree, composite, and partial indexes. Use EXPLAIN ANALYZE to verify query plans and avoid common indexing pitfalls.