Release and recovery ยท XB Field Noteshttps://www.xbcatm.com/series/release-and-recovery/Illustrated field notes on HTTP, DNS, TLS, Caddy, SSH, releases, and recovery.Hugoen-usA maintenance timer should leave its last result visiblehttps://www.xbcatm.com/notes/a-maintenance-timer-should-leave-its-last-result-visible/Sun, 23 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/a-maintenance-timer-should-leave-its-last-result-visible/Pair a oneshot service with a timer, bounded runtime, and journal evidence.A release manifest should name every published bytehttps://www.xbcatm.com/notes/a-release-manifest-should-name-every-published-byte/Sun, 23 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/a-release-manifest-should-name-every-published-byte/Build a deterministic file manifest and compare it before and after transport.Publish a static site by switching complete directorieshttps://www.xbcatm.com/notes/publish-a-static-site-by-switching-complete-directories/Sun, 23 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/publish-a-static-site-by-switching-complete-directories/Stage a complete artifact beside the live tree and replace the directory name only after verification.A release checklist for a static sitehttps://www.xbcatm.com/notes/a-release-checklist-for-a-static-site/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/a-release-checklist-for-a-static-site/A compact pre-publish check for generated HTML, links, assets, and response headers.A release is not complete until the public edge agreeshttps://www.xbcatm.com/notes/a-release-is-not-complete-until-the-public-edge-agrees/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/a-release-is-not-complete-until-the-public-edge-agrees/Compare the generated artifact with the responses a visitor can actually receive.A static server should have one obvious roothttps://www.xbcatm.com/notes/a-static-server-should-have-one-obvious-root/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/a-static-server-should-have-one-obvious-root/Keep the Caddy file server, generated artifact, and rollback path aligned.Backups are only useful after a restore rehearsalhttps://www.xbcatm.com/notes/backups-are-only-useful-after-a-restore-rehearsal/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/backups-are-only-useful-after-a-restore-rehearsal/A backup plan should prove that the important files can be found, verified, and restored.DNS changes need a cache-aware rollback windowhttps://www.xbcatm.com/notes/dns-changes-need-a-cache-aware-rollback-window/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/dns-changes-need-a-cache-aware-rollback-window/Lowering a TTL just before a change does not remove answers already cached with the old value.Reliable defaults beat clever recoveryhttps://www.xbcatm.com/notes/reliable-defaults-beat-clever-recovery/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/reliable-defaults-beat-clever-recovery/A predictable first path prevents more incidents than a complicated fallback can repair.Restart policies need a rate limithttps://www.xbcatm.com/notes/restart-policies-need-a-rate-limit/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/restart-policies-need-a-rate-limit/Let systemd recover transient failures without hiding a permanent configuration error.The advantage of small systemshttps://www.xbcatm.com/notes/the-advantage-of-small-systems/Sat, 22 Aug 2026 00:00:00 +0000https://www.xbcatm.com/notes/the-advantage-of-small-systems/A system is easier to trust when its important behavior fits inside a single mental model.