GitHub Actions down again today
3 hours ago
- #performance recovery
- #service outage
- #database migration
- Service delays occurred from 13:41 to 17:43 UTC on May 12, 2026, affecting Code Scanning, notifications, webhooks, and Slack integrations.
- 53% of Code Scanning check runs exceeded 15 minutes; notifications averaged 22 minutes, and Slack webhooks averaged 20 minutes in delivery.
- The primary cause was replication lag from an internal database migration, leading to insufficient worker capacity for high job enqueues.
- Mitigation involved scaling processing workers to handle increased load, restoring normal service times.
- Future prevention plans include creating dedicated worker pools for high-usage shared queues.
- Recovery updates show services, including Webhooks and CodeQL, returning to normal by 17:43 UTC.