On Mon, Jan 16, 2023 at 02:29:56PM -0500, Robert Haas wrote: > 4. You can reserve a small number of connections for the superuser > with superuser_reserved_connections, but there's no way to do a > similar thing for any other user. As mentioned above, a CREATEROLE > user could set connection limits for every created role such that the > sum of those limits is less than max_connections by some margin, but > that restricts each of those roles individually, not all of them in > the aggregate. Maybe we could address this by inventing a new GUC > reserved_connections and a predefined role > pg_use_reserved_connections.
I've written something like this before, and I'd be happy to put together a patch if there is interest. -- Nathan Bossart Amazon Web Services: https://aws.amazon.com