Intermediate
PostgreSQL Deep Dive
Understand PostgreSQL internals from EXPLAIN plans to the storage engine, indexing strategies, and zero-downtime migration patterns.
4 Lessons
Articles in this series
1
5 min read•Medium
Postgres EXPLAIN Cheat Sheet: Reading Query Plans Like a Pro
Postgres EXPLAIN plans: node types, cost interpretation, and six patterns that kill query performance on large datasets.
2
9 min read•Hard
PostgreSQL Query Planner Internals: From EXPLAIN to Expert Tuning
How PostgreSQL's query optimizer decides, why it gets it wrong, and how to fix it with statistics targets and covering indexes.
3
9 min read•Hard
Database Indexing Strategies: B-Trees, GIN, GiST, and Production Tuning
B-tree internals, composite index ordering, GIN for full-text search, partial indexes, and preventing index bloat in production.
4
8 min read•Hard
Zero-Downtime Database Migrations at Scale
Schema migrations on billion-row tables without downtime: expand-contract, pg_repack, gh-ost, blue-green migrations, and rollbacks.
