funcPostgreSQL()[]Article
Indexing, query planning, and practical database engineering for backend developers.
Scaling PostgreSQL for Go Applications: Read Replicas, Connection Pools and Query Performance
A practical order of operations for scaling PostgreSQL under a growing Go service: query optimization first, then pooling, then read replicas — and why the order matters.
Database Transactions in Go: Isolation Levels, Locks and Real-World Failures
PostgreSQL transaction isolation levels in Go, explained through a real race condition: lost updates, SELECT FOR UPDATE, and why app-level locking isn't enough.
PostgreSQL Connection Pooling in Go: pgxpool Explained
How pgxpool connection pooling actually works in Go: MaxConns, MinConns, connection lifetimes, pool exhaustion, and why raising MaxConns isn't always the fix.
EXPLAIN ANALYZE in PostgreSQL: How to Find Slow Queries
How to read PostgreSQL EXPLAIN ANALYZE output to diagnose slow queries: sequential vs index vs bitmap scans, join strategies, row estimates, and buffers.
PostgreSQL Indexes: A Practical Guide for Backend Engineers
A practical guide to PostgreSQL indexing for backend engineers: B-tree, GIN, composite and partial indexes, selectivity, overhead, and when indexes hurt performance.