Database Management November 17, 2025 1 min read

PostgreSQL Performance Optimization Guide

Optimize your PostgreSQL database for better performance and scalability.

D
Michael Roberts
DevOps engineer focused on cloud infrastructure
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PostgreSQL Optimization

Properly tuned PostgreSQL can handle millions of rows efficiently.

Key Configuration Parameters

# postgresql.conf
shared_buffers = 256MB
effective_cache_size = 768MB
work_mem = 4MB
maintenance_work_mem = 64MB

Index Optimization

-- Create index for frequent queries
CREATE INDEX idx_users_email ON users(email);

-- Analyze query performance
EXPLAIN ANALYZE SELECT * FROM users WHERE email = 'test@example.com';

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