https://xminxmax.dev/Recent content on xmin/xmaxHugoen-usThu, 05 Nov 2026 00:00:00 +0000https://xminxmax.dev/posts/pg-scalpel-scripting-a-live-backend/Thu, 05 Nov 2026 00:00:00 +0000https://xminxmax.dev/posts/pg-scalpel-scripting-a-live-backend/pg_scalpel puts a Janet interpreter inside a running Postgres backend. From there you can look up any function or struct by name, call the server&rsquo;s own C, and swap a function out for your own code, with no recompile and no restart. Here&rsquo;s how it works, and what it costs.https://xminxmax.dev/posts/etw-trace-probes-windows/Fri, 30 Oct 2026 00:00:00 +0000https://xminxmax.dev/posts/etw-trace-probes-windows/PostgreSQL has fifty-seven static trace probes, but no backend for Windows&rsquo; own tracing facility. A patch in the commitfest connects them to Event Tracing for Windows, so Postgres events and kernel events can be recorded in the same trace.https://xminxmax.dev/about/Mon, 01 Jan 0001 00:00:00 +0000https://xminxmax.dev/about/<p>I&rsquo;m Bryan Green. I work on PostgreSQL. This is where I write up what I&rsquo;m building, debugging, or proposing — mostly Postgres internals, along with Windows, storage, and the occasional detour.</p> <p>Posts tagged <code>postgresql</code> are syndicated to Planet PostgreSQL.</p>