Dash0 incident
Transient failures in alert rule evaluations in `eu-west-1`
Resolved after 1 hour 33 minutes, on July 20, 2026.
Alert rule evaluations for customers in the eu-west-1 region may have been impacted between 19:03:45 UTC and 19:30:45 UTC. During this time, some alert rules may have been skipped during that time. The issue has been mitigated, and we are continuing to monitor the system to ensure normal operation.
Update timeline
- monitoring Jul 20, 2026, 07:40 PM UTC
Alert rule evaluations for customers in the eu-west-1 region may have been impacted between 19:03:45 UTC and 19:30:45 UTC. During this time, some alert rules may have been skipped, and some customers may have received "Too many simultaneous queries for user ruler" errors, depending on their rule configuration. The issue has been mitigated, and we are continuing to monitor the system to ensure normal operation.
- monitoring Jul 20, 2026, 08:07 PM UTC
Alert rule evaluations for customers in the eu-west-1 region may have been impacted between 19:03:45 UTC and 19:30:45 UTC. During this time, some alert rules may have been skipped during that time. The issue has been mitigated, and we are continuing to monitor the system to ensure normal operation.
- resolved Jul 20, 2026, 09:14 PM UTC
Incident has been mitigated, an RCA will follow.
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