Continuing my review of the upcoming program for PG DATA 2026, started here. I will start with Umair’s talk, Securing Multi‑Tenant Databases with Row‑Level Security & Open‑Source Auditing. I always await Umair’s talks with great anticipation because his vision of Postgres is closely aligned with mine, and the topics he discusses are usually the ones I am most interested in. This talk interests me a lot, because the topic of multi-tenancy is the one of my favorite, but Umair’s a...

A connection is not free just because it has not logged in yet. From the moment the TCP handshake completes, the would-be client is holding a backend slot counted against max_connections, and it will hold that slot until one of two things happens: it finishes the authentication protocol, or authe…