Engineering docs

Notes on the services we run: deployment, observability and on-call runbooks.

Deploying with systemd

Guide · updated Nov 3

Caddy behind NAT

Runbook · updated Oct 29

Prometheus alert rules

Reference · updated Oct 21

Rotating TLS certificates

Runbook · updated Oct 12
ChangelogAreaDate
Moved metrics retention to 30 daysObservability2026-11-02
New on-call escalation policyOps2026-10-27
Debian 13 base imagesInfra2026-10-14