Disruption with some GitHub services
Incident
Report for GitHub
Resolved
Between July 28, 2025 16:31 UTC to July 29, 2025 12:05 UTC users saw degraded Git Operations for raw file downloads. On average, the error rate was .005%, with a peak error rate of 3.89%. This was due to a sustained increase in unauthenticated repository traffic.
We mitigated the incident by applying regional rate limiting, rolling back a service that was unable to scale with the additional traffic, and addressed a bug that impacted the caching of raw requests. Additionally, we horizontally scaled several dependencies of the service to appropriately handle the increase in traffic.
We are working on improving our time to detection and have implemented controls to prevent similar incidents in future.
We mitigated the incident by applying regional rate limiting, rolling back a service that was unable to scale with the additional traffic, and addressed a bug that impacted the caching of raw requests. Additionally, we horizontally scaled several dependencies of the service to appropriately handle the increase in traffic.
We are working on improving our time to detection and have implemented controls to prevent similar incidents in future.
Update
We continue to work to mitigate this issue.
Update
We are investigating additional ways to mitigate this issue.
Update
We continue to work to mitigate this issue.
Update
Some customers continue to experience errors when accessing raw files and archives. We are working on a mitigation to address the issue.
Update
We are actively setting up additional rate limiting to address increased requests from scraping and investigating the need to add additional hosts.
Update
We are seeing more of https://github.blog/changelog/2025-05-08-updated-rate-limits-for-unauthenticated-requests/ and working to mitigate it.
Update
Provisioning of new hosts is underway. We are still investigating other fixes.
Update
We are adding additional capacity to our infrastructure to mitigate this issue while still investigating.
Update
We are still actively investigating this issue.
Update
Git Operations is experiencing degraded performance. We are continuing to investigate.
Update
We are investigating errors affecting some archive and raw file downloads. Users may experience rate limit warnings or server errors until this is resolved.
Investigating
We are currently investigating this issue.
This incident affected: Git Operations.
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