# Langfuse: Delayed Ingestion for non v4 SDKs

- Provider: [Langfuse](https://outages.live/langfuse.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-09-14 02:51 UTC
- Resolved: 2026-09-14 06:10 UTC (lasted 3 h 19 min)
- Official update: https://status.langfuse.com

## Updates from Langfuse

### resolved, 2026-09-14 06:10 UTC

The incident has been resolved.

### monitoring, 2026-09-14 05:14 UTC

We're making consistent progress in our backlog and are currently seeing delays of about 60 minutes.

### investigating, 2026-09-14 03:52 UTC

We considerably increased throughput of the batch job to write data into v4 data model. We are currently catching up processing data.

### investigating, 2026-09-14 02:51 UTC

We currently experience an ingestion delay of old SDKs by 3 hours. This is due to performance issues in our batch job which moves data into the v4 data model ( ). We currently work on improving the batch job. All v4 compatible SDKs are not impacted by this. Upgrading SDKs is recommended.