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Architecture Matrix
PostgreSQL vs MySQL: Battle of Open-Source RDBMS
Technical evaluation of PostgreSQL (the world's most advanced relational database) against MySQL (the ubiquitous web standard).
Feature & Performance Breakdown
| Feature / Metric | PostgreSQL | MySQL | Advantage |
|---|---|---|---|
| JSON & Semi-structured Data | First-class JSONB with GIN indexing | JSON support, but slower binary indexing | PostgreSQL |
| SQL Standards Compliance | Nearly 100% ANSI-SQL compliant | Historically relaxed, some proprietary syntax | PostgreSQL |
| Extensibility | Vast extension ecosystem (PostGIS, pgvector, Citus) | Limited custom extension capabilities | PostgreSQL |
| Read-heavy Simple Queries | Excellent, powerful query planner | Historically exceptional throughput on simple reads | MySQL |
| Hosting & Managed Cloud | Universal (Supabase, Neon, AWS RDS) | Universal (every web host, AWS RDS, PlanetScale) | Tie |
When to Choose PostgreSQL:
- •AI/Vector applications (pgvector) and geospatial systems (PostGIS)
- •Complex analytical queries with multiple JOINs and window functions
- •Modern applications storing hybrid relational and document JSONB data
When to Choose MySQL:
- •WordPress, Drupal, and classic LAMP stack deployments
- •High-throughput simple key-lookup read operations
- •Legacy infrastructure deeply optimized for InnoDB replication