Langfuse incident

Longer v3 -> v4 propagation delay

Resolved after 4 hours 40 minutes, affecting EU (cloud.langfuse.com) (Ingestion API) and US (us.cloud.langfuse.com) (Ingestion API) and 1 more, on August 19, 2026.

resolved Aug 19, 2026, 03:10 PM UTC

Back to normal propagation delay

Started: Aug 19, 2026, 10:30 AM UTC
Resolved: Aug 19, 2026, 03:10 PM UTC
Duration: 4h 40m
Detected by Pingoru: Aug 19, 2026, 10:30 AM UTC

Affected components

EU (cloud.langfuse.com) (Ingestion API)US (us.cloud.langfuse.com) (Ingestion API)HIPAA (hipaa.cloud.langfuse.com) (Ingestion API)JP (jp.cloud.langfuse.com (Ingestion API)

Update timeline

monitoring Aug 19, 2026, 10:30 AM UTC

We have scaled our database infrastructure to match the throughput demand
monitoring Aug 19, 2026, 12:36 PM UTC

We have scaled our database infrastructure to match the throughput demand
monitoring Aug 19, 2026, 01:19 PM UTC

Latest major SDK versions are not impacted. Find upgrade docs [here](https://langfuse.com/docs/observability/sdk/upgrade-path).
monitoring Aug 19, 2026, 01:19 PM UTC

Latest major SDK versions are not impacted. Find upgrade docs here: https://langfuse.com/docs/observability/sdk/upgrade-path.
resolved Aug 19, 2026, 03:10 PM UTC

Back to normal propagation delay
resolved Aug 19, 2026, 03:10 PM UTC

Back to normal propagation delay
resolved Aug 19, 2026, 03:10 PM UTC

Back to normal propagation delay

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