PostgreSQL: The World’s Most Advanced Open Source Database

PostgreSQL (or just Postgres) has quietly won the database war.

Killer Features

1. JSONB: Store unstructured JSON data and query it efficiently (indexing keys). It replaces MongoDB for 90% of use cases.
2. Extensions:
   • PostGIS: Industry standard for geospatial data (Maps).
   • pgvector: Vector similarity search for AI/Embeddings.
3. Reliability: It just doesn’t lose data.

Why Startups Love It

It allows you to start as a simple relational database, add document features later (JSONB), and even add AI features (pgvector) without changing your infrastructure.

Conclusion

Just use Postgres.