# Statsig: 5xx Spike for Client SDK Initialization

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-07-18 15:10 UTC · Resolved: 2025-07-18 15:21 UTC · Duration: 11 min
- Updates: 2 · Affected components: Config Delivery API - US East 1, US East 1
- [Vendor status page: https://stspg.io/mt0m684j3zt7](https://stspg.io/mt0m684j3zt7)
- [Company: Statsig](https://rewindex.com/company/statsig.md)

## Summary

Statsig reported a major 5xx spike affecting Client SDK Initialization and Config Delivery API - US East 1, starting at 2025-07-18 15:10 UTC and resolved at 2025-07-18 15:21 UTC (11 min). Statsig shifted traffic to restore service and identified a GCP outage as the root cause. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2025-07-18 15:10 UTC: At approximately, 8:10AM PST, we detected a growing rate of 5xx in our US East region. We have shifted traffic, and expect things to recover fully in a few minutes. Mitigated: 07/18/2025 08:21:00 GMT-0700 (Pacific Daylight Time): The traffic shift has completed and things should be recovered. Update: 10:49AM PST, the rootcause was identified to be a GCP Outage: https://status.cloud.google.com/incidents/8cY8jdUpEGGbsSMSQk7J
- **resolved** 2025-07-18 15:21 UTC: Resolved.

## Rewindex changes for this incident

- 2025-07-18 15:10 UTC: [Major incident: 5xx Spike for Client SDK Initialization](https://rewindex.com/change/iea178d6f6e4a2e.md)


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Canonical: https://rewindex.com/company/statsig/incidents/ynw3lf9n55nj · Markdown: https://rewindex.com/company/statsig/incidents/ynw3lf9n55nj.md · JSON: https://rewindex.com/api/v1/companies/statsig/incidents/ynw3lf9n55nj · Generated 2026-10-18T11:29:24.739Z