Reserve connections for the pg_use_reserved_connections group in PostgreSQL 16 Nathan Bossart implemented a brand-new patch that provides a way to reserve connection slots for non-superusers. The patch was reviewed by Tushar Ahuja and Robert Haas. Committed by Robert Haas. The commit message is: Let’s try reserve connections in our work! Let’s edit the postgresql.conf file […]

So, you’re building the next unicorn startup and are thinking feverishly about a future-proof PostgreSQL architecture to house your bytes? My advice here, having seen dozens of hopelessly over-engineered / oversized solutions as a database consultant over the last 5 years, is short and blunt: Don’t overthink, and keep it simple on the database side! […]

The PostgreSQL caching system has always been a bit of a miracle to many people and many have asked me during consulting or training sessions: How can I figure out what the PostgreSQL I/O cache really contains? What is in shared buffers and how can one figure out? This post will answer this kind of […]

  In a recent wrestling match with the Linux “out-of-memory killer” for a CYBERTEC customer I got acquainted with Linux control groups (“cgroups”), and I want to give you a short introduction how they can be used with PostgreSQL and discuss their usefulness. Warning: This was done on my RedHat Fedora 27 system running Linux […]