Incident Library

Organisation

RevenueCat

RevenueCat · revenuecat

1 case · 2022

Root cause Breaking change in an upgrade
Component PostgreSQL vacuumDatabaseDatabase proxy and connection poolerDatabase replicationQuery planner and table statistics
Contributing factor Unverified assumptionAutomation amplificationMonitoring blind spotUnrepresentative staging
Symptom Connection pool exhaustionDatabase overloadHigh latencyService outage

Cases

  1. IL-0308 Most RevenueCat backend systems failed after cutover to a new Aurora PostgreSQL 14 cluster as queries became very slowRevenueCat · 2022

    Root cause Breaking change in an upgrade