Optimize Your PostgreSQL Database

PostgreSQL is one of the most advanced open-source relational databases. Proper tuning can dramatically improve your application performance.

Key Configuration Parameters

  • shared_buffers - Set to 25% of total RAM
  • effective_cache_size - Set to 75% of total RAM
  • work_mem - Memory for sort operations (4-64MB)
  • maintenance_work_mem - Memory for maintenance tasks

Indexing Best Practices

CREATE INDEX idx_articles_slug ON articles_article(slug);
CREATE INDEX idx_articles_created ON articles_article(created_at DESC);

Query Optimization

Use EXPLAIN ANALYZE to understand query execution plans. Look for sequential scans on large tables and add appropriate indexes. Avoid SELECT * and only fetch the columns you need.

Connection pooling with PgBouncer can also significantly reduce overhead for high-traffic applications.