Trello change history: Trello was temporarily inaccessible

Trello reported a major outage affecting all customers, with inaccessibility, errors or slow-loading cards and boards. The incident started at 2025-05-15 14:27 UTC and resolved at 2025-05-15 15:21 UTC (53 min). Trello attributed it to database plan cache expiry and high resource usage from subsequent query planning; a fix was implemented.