GitHub Status

Resolved: On August 27, 2025 between 20:35 and 21:17 UTC, Copilot, Web and REST API traffic experienced degraded performance. Copilot saw an average of 36% of requests fail with a peak failure rate of 77%. Approximately 2% of all non-Copilot Web and REST API traffic requests failed.

This incident occurred after a stale schema cache was used following a database migration. This led to a large number of failed queries. At 21:15 UTC, we applied a fix and by 21:17 UTC, all services had fully recovered.

We have implemented a block for this failure mode as an immediate solution and are actively working to add safeguards to prevent similar issues from occurring in the future.

Investigating: API Requests and Issues are operating normally.

Investigating: We've discovered the cause of the service disruption and applied a mitigation.

Investigating: We are continuing to investigate this issue.

Investigating: API Requests is experiencing degraded performance. We are continuing to investigate.

Investigating: The team is aware of the root cause of this issue and is working to mitigate the issue quickly.

Investigating: Issues is experiencing degraded performance. We are continuing to investigate.

Investigating: API Requests is experiencing degraded availability. We are continuing to investigate.

Investigating: We are currently investigating this issue.

Resolved: On August 27, 2025 between 20:35 and 21:17 UTC, Copilot, Web and REST API traffic experienced degraded performance. Copilot saw an average of 36% of requests fail with a peak failure rate of 77%. Approximately 2% of all non-Copilot Web and REST API traffic requests failed.

This incident occurred after a stale schema cache was used following a database migration. This led to a large number of failed queries. At 21:15 UTC, we applied a fix and by 21:17 UTC, all services had fully recovered.

We have implemented a block for this failure mode as an immediate solution and are actively working to add safeguards to prevent similar issues from occurring in the future.

Investigating: API Requests and Issues are operating normally.

Investigating: We've discovered the cause of the service disruption and applied a mitigation.

Investigating: We are continuing to investigate this issue.

Investigating: API Requests is experiencing degraded performance. We are continuing to investigate.

Investigating: The team is aware of the root cause of this issue and is working to mitigate the issue quickly.

Investigating: Issues is experiencing degraded performance. We are continuing to investigate.

Investigating: API Requests is experiencing degraded availability. We are continuing to investigate.

Investigating: We are currently investigating this issue.