ClickHouse incident
Distributed Cache performance degradation in AWS us-east-1
ClickHouse experienced a minor incident on September 14, 2026 affecting us-east-1 and us-east-1, lasting 3h 59m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 14, 2026, 08:36 PM UTC
Status: Investigating ClickHouse is investigating degraded Distributed Cache performance affecting multiple ClickHouse Cloud customers. Distributed Cache is a feature currently in Private Preview. We will provide further updates as they become available. Affected components us-east-1 (Degraded performance)
- identified Sep 14, 2026, 09:28 PM UTC
Status: Identified ClickHouse has identified the cause and proceeding with remedying impacted services. Affected components us-east-1 (Degraded performance)
- monitoring Sep 14, 2026, 10:41 PM UTC
Status: Monitoring Impacted services have been updated and are now fully operational. ClickHouse is monitoring. Affected components us-east-1 (Operational)
- resolved Sep 15, 2026, 12:35 AM UTC
Status: Resolved This incident has been resolved. Distributed Cache performance in the region is back to normal. Please contact ClickHouse Support if any services in the Distributed Cache Private Preview are experiencing any remaining issues: https://console.clickhouse.cloud/support Affected components us-east-1 (Operational)