Census change history: Brief downtime for unscheduled database maintenance

Census reported a major outage affecting the Census Sync Management UI and Sync Engine during unscheduled emergency maintenance of a primary database. Users could see UI and API downtime; failed syncs would be automatically retried. The incident started at 2024-06-03 19:37 UTC and was resolved at 2024-06-03 19:42 UTC, with a reported duration of 4 min.