Elevated errors and latency in europe-west4

This incident has been resolved.

For approximately 1 hour starting at 06:11 PST on February 26, 2026, Firebase App Hosting backends in europe-west4 were seeing elevated errors on un-cached content due to increased network congestion and elevated requests. The issue was resolved for all affected projects as of 07:10 PST. We will conduct an internal investigation of this issue and make appropriate improvements to our systems to help prevent or minimize future recurrence.