https://parabol.vip/Notes on servers, databases and small tools.https://parabol.vip/posts/small-server-backups-with-restic.htmlhttps://parabol.vip/posts/small-server-backups-with-restic.htmlSat, 26 Sep 2026 09:00:00 +0000A short setup for encrypted, deduplicated backups to any S3-compatible storage.https://parabol.vip/posts/replacing-cron-jobs-with-systemd-timers.htmlhttps://parabol.vip/posts/replacing-cron-jobs-with-systemd-timers.htmlMon, 14 Sep 2026 09:00:00 +0000Why I moved nightly jobs to timers, and the two options that make them behave.https://parabol.vip/posts/tcp-keepalive-defaults-and-half-dead-connections.htmlhttps://parabol.vip/posts/tcp-keepalive-defaults-and-half-dead-connections.htmlWed, 02 Sep 2026 09:00:00 +0000Why idle connections hang for two hours after a network drop.https://parabol.vip/posts/reading-explain-analyze-without-panic.htmlhttps://parabol.vip/posts/reading-explain-analyze-without-panic.htmlMon, 24 Aug 2026 09:00:00 +0000The three numbers in a PostgreSQL plan that usually explain a slow query.