Some AppSheet users in Europe and America experienced increased latency, resulting in app synchronization failures and editor loading timeouts from Thursday, 2025-10-09 5:25 AM PDT to 2025-10-09 6:20

Update timeline

1. resolved Oct 09, 2025, 03:09 PM UTC

   Some AppSheet users in Europe and America experienced increased latency, resulting in app synchronization failures and editor loading timeouts from Thursday, 2025-10-09 5:25 AM PDT to 2025-10-09 6:20 PDT We will provide an update by Thursday, 2025-10-09 08:30 PDT with current details.

2. resolved Oct 09, 2025, 03:14 PM UTC

   The issue with AppSheet in Europe and America is now resolved. From preliminary investigation the issue was due to resource contention that resulted in our servers not being able to startup during the duration of the issue. The issue was mitigated by rerouting traffic away from the impacted servers.

3. resolved Oct 09, 2025, 05:52 PM UTC

   Affected services and features: AppSheet - App synchronization and Editor loading Regions/zones: * EMEA * AMER (partial impact) Description: On Thursday, 9 October 2025, some AppSheet users in the EMEA and AMER regions experienced elevated latency, resulting in app synchronization failures and editor loading timeouts. The cumulative duration of impact across both windows was 2 hours, 50 minutes. Preliminary investigation identified the issue was due to failures in autoscaling in 2 regions which caused servers to overload and cross-region failover did not occur. The issue was mitigated by rerouting traffic away from the impacted regions. Google will complete a full Incident Report in the following days that will provide a detailed root cause. Customer impact: Customers in the affected regions may have experienced high latency, resulting in errors when syncing data and loading AppSheet applications. The issue was initially observed in the EMEA region and was later observed in both EMEA and parts of the AMER region. The timeline of the two distinct impact windows is as follows: * EMEA only: 9 October 2025, from 00:10 to 02:05 US/Pacific. * EMEA and partial AMER: 9 October 2025, from 05:25 to 06:20 US/Pacific. ---

4. resolved Oct 10, 2025, 01:28 AM UTC

   Prevention ais: * We added an alert to detect missing HPA, ensuring that our engineers can remediate the issue manually if needed. * We updated the migration process for our Kubernetes infrastructure to prevent the continuous removal of HPA after migration. * We are fixing cross region failover routing in Anthos Service Mesh. Google is committed to quickly and continually improving our technology and operations to prevent service disruptions. We appreciate your patience and apologize again for the impact to your organization. We thank you for your business. Detailed Description of Impact The overarching issue was that AppSheet servers became overloaded in two regions due to a failure in the automatic scaling mechanism. This resulted in high latency and elevated error rates, causing cascading issues with app synchronization and the ability to load the editor. The impact occurred across two distinct windows, initially affecting users in the EMEA region, and later expanding to include a partial section of the AMER region.