GitHub Availability Report: December 2024

In December 2024, GitHub experienced two significant performance degradation incidents. On December 17, an error rate peaking at 44.3% disrupted services due to overload from planned maintenance affecting the live updates service, causing users to encounter login issues and forcing manual refreshes. The issue was mitigated by reversing the maintenance changes and scaling up server capacity, with plans to enhance monitoring and alerting to prevent future occurrences. On December 20, a partial outage from a third-party provider rendered some marketing pages inaccessible, resulting in 500 errors for users, though operational products remained unaffected. The provider resolved the issue within 43 minutes, and GitHub is exploring improved error handling for such scenarios. Users are encouraged to follow the status page for real-time updates and refer to the GitHub Engineering Blog for more information.