Close change history: Database Failures

Close reported major database failures causing intermittent service unavailability, starting 2026-08-11 13:12 UTC and resolved at 2026-08-11 15:15 UTC (2 h 3 min). Close adjusted its scaling strategy and reported healthy recovery; its partial postmortem separately described about 2.5 hours of intermittent unavailability between 08:00 UTC and 17:03 UTC.