Asteria Fieldbookhttps://asteria-fieldbook.duckdns.org/Practical notes for small web systems.enThu, 16 Jul 2026 17:45:00 GMT Safe systemd overrides without editing vendor unitshttps://asteria-fieldbook.duckdns.org/notes/systemd-overrides.htmlhttps://asteria-fieldbook.duckdns.org/notes/systemd-overrides.htmlSun, 12 Jul 2026 10:00:00 GMTUse drop-ins, inspect the merged unit and keep rollback close at hand. A practical cache-control checklisthttps://asteria-fieldbook.duckdns.org/notes/http-caching.htmlhttps://asteria-fieldbook.duckdns.org/notes/http-caching.htmlSun, 28 Jun 2026 10:00:00 GMTMatch browser and intermediary caching to the way each asset changes. Backups are evidence, not assurancehttps://asteria-fieldbook.duckdns.org/notes/backup-verification.htmlhttps://asteria-fieldbook.duckdns.org/notes/backup-verification.htmlTue, 09 Jun 2026 10:00:00 GMTA compact restore drill for catching silent failures before an incident.