# Degradation in repos contents API

- Provider: [GitHub](https://down.guide/github)
- Level: confirmed
- Impact: Degraded
- lasted 21m
- started 2026-09-04 22:02 UTC
- id: DWN-ab7ad31bd5
- Official page: https://stspg.io/vhmsw2rhdcgv

## Updates from GitHub
### 2026-09-04 22:02 UTC: investigating
We are investigating reports of impacted performance for some GitHub services.

### 2026-09-04 22:23 UTC: resolved
On September 4, 2026, between approximately 21:45 and 22:07 UTC, some users experienced errors and elevated latency for repository operations. The incident was fully resolved at 22:23 UTC.
The cause was a capacity change that spread one of our clusters across additional availability zones; our zone-aware traffic routing kept sending requests to the original zone for performance, overloading a small set of servers while the new capacity sat idle. We resolved the incident by reverting the change and letting traffic rebalance.
We are improving per-zone capacity guarantees, cross-zone load-shedding, and pre-production testing of multi-zone changes to prevent recurrence.

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