Incident Library

Root cause

Query plan regression

쿼리 실행 계획 변경 · query-plan-regression

1 case · 2026

Component DatabaseQuery planner and table statistics
Contributing factor Inefficient queryMonitoring blind spot
Symptom Database overloadHigh latencyService outage
Organisation Clerk

Cases

  1. IL-0317 Clerk's Postgres slowed after an automatic analyze flipped a query plan, and over 95% of requests got 429Clerk · 2026

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