pg_vectorsearch

pg_vectorsearch is a PostgreSQL extension providing a high-performance approximate nearest neighbor (ANN) vector search implemented in C for seamless integration and speed. It supports native vector types and is compatible with existing pgvector tables, offering a PRISM index that improves querying and indexing speed with hierarchical clustering, SIMD-optimized computations, and dynamic updates. The project is open-source and targeted at developers needing scalable vector search capabilities within PostgreSQL databases.