Trello change history: Trello is unavailable

Trello reported a critical outage affecting API and Trello.com, with errors across web, iOS and Android apps, starting 2023-11-30 14:21 UTC and lasting 3 h 16 min until resolution at 2023-11-30 17:37 UTC. The postmortem attributed it to a code change that overloaded a critical database component; Trello confirmed its database fix restored service.