pgvector
A PostgreSQL extension that adds vector types, distance operators, and ANN indexes. Turns your existing database into a vector store.
Vector Databases Beginner
Category
Vector Databases
Difficulty
Beginner
When to use
You already run Postgres and your vector workload is modest to medium — tens of millions of vectors, single-digit ms queries.
When not to use
You need billions of vectors at scale, or you're not already using Postgres.
Alternatives
Pinecone Qdrant Weaviate Milvus