Felix Pinkston
December 16, 2024 08:45
GitHub experienced performance issues in November 2024 due to a database error. This incident impacted dotcom customers with an hour-long delay in notifications.
According to GitHub, in November 2024, GitHub experienced a single incident that impacted service performance. An outage that occurred on November 19 impacted our notification service, resulting in delays in sending notifications to dotcom customers.
Accident Details
The incident began at 10:56 UTC and lasted 1 hour and 7 minutes. During this time, the database host went into read-only mode after a maintenance process, which delayed notifications by approximately an hour. GitHub’s engineering team resolved the issue by restoring the database host to a writable state, allowing the notification service to resume normal operation. By 12:36 UTC, all pending notifications have been successfully delivered.
precautions
In response to this incident, GitHub is focusing on improving observability across our database cluster. This initiative aims to reduce the likelihood of similar occurrences in the future by improving detection times and strengthening system resilience at the onset.
Additional Insights
This incident highlights the importance of strong database management practices and effective maintenance protocols to prevent service interruptions. GitHub aims to maintain high availability and reliability for users by improving system monitoring and resiliency.
For ongoing status updates and detailed post-incident analysis, GitHub encourages users to visit the status page. Additional insights and technical updates can be found on the GitHub Engineering Blog.
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