Current answer
Langfuse experienced a minor incident: Slow trace data retirival across API and UI in EU. Resolved on Oct 21, 2026.
The notice publication date does not establish the outage start. Provider resolved: .
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Provider notice timeline
Affected Components
Public API
LLM-as-a-judge
UI
Incident Timeline
Resolved
should be finally resolved
Oct 21, 2026 at 9:39 AM UTC
Monitoring
Looks like some timeout are still occurring. Monitoring.
Oct 21, 2026 at 8:56 AM UTC
Resolved
All replicas look healthy again
Oct 21, 2026 at 8:45 AM UTC
Identified
Slow clickhouse read replicas affecting performance across the service. Draining and replacing them.
Oct 21, 2026 at 8:31 AM UTC
Investigating
Slow traces data serving across API and UI
Oct 21, 2026 at 7:46 AM UTC
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