Incidentsby GlyphClickHouse outage history and postmortems
Data and observability · 15 incidents in 90 days · 99.83% implied uptime · last 6d ago
History
About ClickHouse
The real-time analytics database and ClickHouse Cloud.
The last year, day by day
Downtime, added up
ClickHouse: 3h 43m weighted downtime in range, category median 1h 31m.
15 incidents, 0 major or critical, 2d 5h of incident time (0m major or critical, 2d 5h partial), longest 29h 46m, implied uptime 99.83%, between Aug 12, 2026 and Nov 9, 2026.
Across Glyph:Company profileAcquisitionsComplianceFree tiersRoundupPaydaysRegionsChangefeedUptime
Questions
Is ClickHouse down right now?
Check ClickHouse's own status page at https://status.clickhouse.com for the live state. This page shows ClickHouse's incident history from that page; the most recent incident started 2026-11-02: "SQL Console database connection outage".
How often does ClickHouse have outages?
ClickHouse posted 15 incidents in the last 90 days and 31 in the last year, 0 of them major or critical in the last 90 days. The median incident lasted 50m.
When was ClickHouse's last major outage?
2026-07-22: "CDC ClickPipes stuck in maintenance state", lasting 2h 43m.
What usually causes ClickHouse incidents?
Where ClickHouse explained the cause, the most common was capacity and load (3 incidents). Most status updates do not name a cause.