PostgreSQL performance tuning requires understanding configuration and queries. Here’s a guide.

Configuration Tuning

postgresql.conf

# Memory settings
shared_buffers = 256MB
effective_cache_size = 1GB
work_mem = 16MB

# Connection settings
max_connections = 100

# Query planner
random_page_cost = 1.1

Query Optimization

Use EXPLAIN ANALYZE

EXPLAIN ANALYZE
SELECT * FROM users WHERE email = '[email protected]';

Indexing

-- B-tree index
CREATE INDEX idx_user_email ON users(email);

-- Partial index
CREATE INDEX idx_active_users ON users(email) WHERE status = 'active';

-- Composite index
CREATE INDEX idx_user_status_created ON users(status, created_at);

Best Practices

  1. Analyze query plans
  2. Create appropriate indexes
  3. Use connection pooling
  4. Monitor slow queries
  5. Vacuum regularly

Conclusion

Tune PostgreSQL for optimal performance! 🐘