from the accompanying blog post: https://www.tigerdata.com/blog/announcing-pg_vectorsearch-sc...
> TLDR: We are launching pg_vectorsearch, a new open-source PostgreSQL extension that makes vector search dramatically faster and more cost-efficient. Its new PRISM index uses partitioning and compression instead of HNSW's graph-based approach, delivering faster queries with a fraction of the memory and significantly faster index builds. At 100 million vectors, PRISM achieved 6 ms query latency on a machine with 4× less memory than HNSW, with index builds over 20× faster.
Btw, I do work for Tiger Data/timescale, but am not at all associated with this team. I just found this release really exciting.
I sent the thread to Erik (the main contributor) though, so if you have feedback or questions, good chance that he'll see it.