Runbook — Backend5xxRateSpike
Backend5xxRateSpike
Severity
Section titled “Severity”warning
Audience
Section titled “Audience”ops
Phase 30.3 / KAN-293
What this alert will do
Section titled “What this alert will do”A finer-grained version of HighErrorRate — fires earlier (lower threshold, shorter window) for ops investigation, before it escalates to the critical HighErrorRate that wakes tenant admins. Carries the Phase 30 audience-aware labels.
Fallback procedure (until 30.3 lands)
Section titled “Fallback procedure (until 30.3 lands)”Use the HighErrorRate runbook diagnosis steps — same machinery, just looser thresholds for now.
Related
Section titled “Related”- Phase 30.3 spec
HighErrorRate— existing critical-severity siblingBackendP95Regression— latency sibling
Last reviewed
Section titled “Last reviewed”2026-05-29 — ops (stub)