An AI assistant is planned. Until it is genuinely useful we would rather point you at the page that actually answers your question.
PostgreSQL is an open-source relational database with strong guarantees around transactions and data integrity. It enforces constraints at the database level, so invalid data cannot enter regardless of which application writes it.
Its extension ecosystem widens its range considerably — JSONB for document-style data, PostGIS for geospatial queries, pgvector for embedding search, TimescaleDB for time-series. One database often covers needs that would otherwise require several.
Suitability
And when it is not. Choosing the wrong tool costs more than any implementation detail.
In practice
The main store for most systems we build, with constraints enforced in the schema.
Row-level security enforcing tenant boundaries at the database rather than in every query.
pgvector for retrieval alongside relational data, avoiding a separate vector database in many cases.
Considerations
Practical notes from running this in production.
FAQ
Tell us what you are trying to build or fix. We will come back with scope, approach and an honest view on cost and timeline.