/ notes on backend & infra Wed, 26 Aug 2026 02:43:38 +0000 /p/conntrack-table-full.html conntrack-table-full Sat, 15 Aug 2026 09:00:00 +0000 A slow afternoon of packet drops that turned out to be a counter, not a cable. /p/tls-session-reuse.html tls-session-reuse Thu, 16 Jul 2026 09:00:00 +0000 Why the p99 dropped after we stopped throwing handshakes away. /p/autovacuum-again.html autovacuum-again Mon, 08 Jun 2026 09:00:00 +0000 The table was small. The bloat was not. /p/systemd-timers.html systemd-timers Wed, 13 May 2026 09:00:00 +0000 Not because cron is bad, but because logs are good. /p/goroutine-leak.html goroutine-leak Thu, 16 Apr 2026 09:00:00 +0000 Memory grew slowly enough that restarts hid it for months. /p/cache-headers.html cache-headers Mon, 23 Mar 2026 09:00:00 +0000 Most of the win came from admitting which files never change.