ClickHouse Cloud incident: Distributed Cache performance degradation in AWS us-east-1

1. resolvedSep 15, 2026, 00:35 UTC

   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>

2. monitoringSep 14, 2026, 22:41 UTC

   Impacted services have been updated and are now fully operational. ClickHouse is monitoring.

3. identifiedSep 14, 2026, 21:28 UTC

   ClickHouse has identified the cause and proceeding with remedying impacted services.

4. investigatingSep 14, 2026, 20:36 UTC

   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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in ClickHouse Cloud's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does ClickHouse Cloud have incidents?

ClickHouse Cloud reported 16 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 2h 28m. See ClickHouse Cloud's uptime and incident history