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Temporal Cloud: Customers in AWS eu-west-1 may experience elevated API latencies

Affected components: Amazon Web Services (AWS) - eu-west-1eu-west-1

Timeline of updates

1. investigating2026-07-17 14:30 UTC

   Customers in AWS eu-west-1 may experience elevated API latencies.

2. investigating2026-07-17 14:38 UTC

   We are failing over MRN namespaces

3. investigating2026-07-17 14:49 UTC

   The failover has been completed.

4. monitoring2026-07-17 15:22 UTC

   Latencies are back to normal levels, we’re monitoring.

5. resolved2026-07-17 15:56 UTC

   A spike in workload caused resource contention in the underlying infrastructure, resulting in elevated latency for critical APIs. We scaled up the underlying resources to handle the increased load, and latencies have returned to normal. We will continue to monitor the system, but the mitigation is complete and the incident has been resolved.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Temporal Cloud profile · Recent Temporal Cloud incidents · Markdown · JSON