GitHub Reports November 2024 Availability Incident

In November 2024, GitHub encountered a single incident that affected service performance, according to GitHub. The disruption, which occurred on November 19, impacted the notifications service, causing delays in sending notifications to dotcom customers.

Incident Details

The incident began at 10:56 UTC and lasted for one hour and seven minutes. During this period, notifications were delayed by approximately one hour due to a database host reverting to read-only mode after a maintenance process. GitHub's engineering team addressed the issue by restoring the database host to a writable state, which allowed the notification service to resume normal operations. By 12:36 UTC, all pending notifications were delivered successfully.

Preventive Measures

In response to the incident, GitHub is focusing on enhancing its observability across database clusters. This initiative aims to improve detection times and bolster system resilience during startup phases, reducing the likelihood of similar occurrences in the future.

Additional Insights

The incident underscores the importance of robust database management practices and effective maintenance protocols in preventing service disruptions. By enhancing system monitoring and resilience, GitHub aims to maintain high availability and reliability for its users.

For ongoing status updates and detailed post-incident analyses, GitHub encourages users to visit their status page. Further insights and technical updates can be found on the GitHub Engineering Blog.