Qdrant
Vector databasesA fast open-source vector database with rich filtering, built for production retrieval.
Qdrant is a purpose-built vector database written in Rust. It is fast, scales well, and its standout feature is filtered search — combining similarity with structured metadata conditions efficiently.
It runs self-hosted or as Qdrant Cloud, so a project can start on its own infrastructure and move to managed without changing the data model.
Where it's ideally used
A strong pick when retrieval needs to combine similarity with metadata filtering, or has outgrown an in-database extension.
Where it doesn't fit
An extra system to operate that you may not need when data sits in Postgres and the workload is modest.