Changes / Statsig / All US-West Requests Failing

Statsig: Critical incident: All US-West Requests Failing

Summary

Statsig reported a critical US-West outage affecting configuration APIs for SDK initialization, background syncing, and the Console API. It started at 2025-10-23 00:10 UTC and was resolved at 2025-10-23 00:35 UTC, lasting 25 min; a networking change routed requests to an incorrect backend, causing exceptions, and Statsig addressed the change.

Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.

Major incidentLabel: outage (model (Jev), 100%)Changed Detected Source: stspg.io (opens in new tab)

What changed

AddedTitle#1
Before: not present
After: All US-West Requests Failing
AddedImpact#2
Before: not present
After: critical
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2025-10-23 00:10 UTC
AddedResolved time#5
Before: not present
After: 2025-10-23 00:35 UTC
AddedAffected components#6
Before: not present
After: Config Delivery API - US West 1, Console API, US West 1
AddedUpdateinvestigating#7
Before: not present
After: Starting at 5:10PM PST, a networking change was made which caused an outage of all endpoints going to our US-West region to route to the incorrect backend causing exceptions, such as filter abort/RBAC denied. The team has addressed the networking change, and the US-West region should be fully recovered as of 5:35PM. Only configuration APIs for SDK initialization, background syncing, and console API was impacted. All other APIs are confirmed healthy during this incident. Mitigated: 10/22/2025 5:40 PM PST
AddedUpdateresolved#8
Before: not present
After: Resolved.

First version of this incident archived by Rewindex. View the live incident (opens in new tab).

History of this incident

When (UTC)ChangeKind
Critical incident: All US-West Requests Failing (this change)
Statsig reported a critical US-West outage affecting configuration APIs for SDK initialization, background syncing, and the Console API. It started at 2025-10-23 00:10 UTC and was resolved at 2025-10-23 00:35 UTC, lasting 25 min; a networking change routed requests to an incorrect backend, causing exceptions, and Statsig addressed the change.
Major incident

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