Type “zero downtime database migration” into the site’s search bar and you’ll get articles and talks about database migration with minimal downtime, even if those words aren’t in the titles or content. This is semantic search on PostgreSQL and pgvector, without paid embedding APIs or a separate vector database. In this series I’ll cover how it works and why I chose this stack.
This is a companion discussion topic for the original entry at https://percona.community/blog/2026/05/29/semantic-search-on-postgresql-part-1/