Announcing the PlanetScale vectors public beta

This post announces the public beta of PlanetScale's vector search and storage capabilities, which allow storing vector data directly within MySQL. It details the underlying architecture, which is based on Microsoft Research's SPANN and SPFresh algorithms, extended with transactional support and integration into InnoDB. The post contrasts this approach with HNSW and DiskANN, highlighting the benefits of incremental updates, ACID compliance, and scalability to terabytes. It also explains how to enable the beta feature at the branch level.