Why we use PostgreSQL
PostgreSQL is our default database for structured data. ACID compliance, JSON support, full-text search, and extensions like PostGIS and pgvector make it the most versatile database for modern applications.
Key benefits
- ACID compliance for financial-grade data integrity
- pgvector enables AI vector search without separate infrastructure
- JSON/JSONB support bridges relational and document models
- PostGIS for geospatial queries at scale
- Row-level security for multi-tenant SaaS
- Proven at petabyte scale — used by Apple, Instagram, Spotify
PostgreSQL — Frequently Asked Questions
PostgreSQL vs MongoDB — when to use which?
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PostgreSQL for structured data with relationships, transactions, and when you need ACID guarantees. MongoDB for truly unstructured data or when schema flexibility is the primary concern.
How does PostgreSQL handle AI workloads?
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pgvector extension enables vector similarity search directly in PostgreSQL — no need for a separate vector database for many RAG and semantic search use cases.
Can PostgreSQL scale horizontally?
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Read replicas handle read scaling. For write scaling, Citus extension enables distributed PostgreSQL. For most applications under 10TB, vertical scaling with proper indexing is sufficient.
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