PostgreSQL vs MySQL: Choosing the Right Database
Relational databases remain the backbone of most full stack applications. PostgreSQL and MySQL are the two most common choices-each excels in different scenarios.
PostgreSQL Strengths
PostgreSQL offers advanced types (JSONB, arrays), full-text search, robust concurrency (MVCC), and extensions like PostGIS. It is the default choice for complex queries, analytics-heavy apps, and strict data integrity.
MySQL Strengths
MySQL (and MariaDB) are widely hosted, familiar to many teams, and perform well for read-heavy web workloads. Managed offerings are plentiful and often slightly cheaper at small scale.
Comparison at a Glance
| Feature | PostgreSQL | MySQL |
|---|---|---|
| JSON support | JSONB, indexed | JSON type |
| Window functions | Excellent | Supported (8+) |
| Replication | Logical + streaming | Mature |
| License | Open source | GPL / commercial |
Practical Advice
Choose PostgreSQL for greenfield SaaS, geospatial data, or when you need advanced SQL. Choose MySQL when your team and hosting stack are already invested in it-both are production-proven.
Conclusion
You cannot go wrong with either for a typical CRUD API. Prefer PostgreSQL when your roadmap includes complex reporting, JSON documents, or extensions-you will outgrow MySQL conveniences less often.