# Langfuse: Delayed Ingestion for non v4 SDKs

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-09-13 23:51 UTC · Resolved: 2026-09-14 06:10 UTC · Duration: 6.3 h
- Updates: 4 · Affected components: Ingestion API
- [Vendor status page: https://status.langfuse.com/incidents/01M2EX7FAKVNNVRJ7M6GZK665P](https://status.langfuse.com/incidents/01M2EX7FAKVNNVRJ7M6GZK665P)
- [Company: Langfuse](https://rewindex.com/company/langfuse.md)

## Timeline of updates

- **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 (https://langfuse.com/changelog/2026-08-17-langfuse-v4).   We currently work on improving the batch job. All v4 compatible SDKs are not impacted by this. Upgrading SDKs is recommended.
- **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.
- **monitoring** 2026-09-14 05:14 UTC: We're making consistent progress in our backlog and are currently seeing delays of about 60 minutes.
- **resolved** 2026-09-14 06:10 UTC: The incident has been resolved.


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Canonical: https://rewindex.com/company/langfuse/incidents/01M2EX7FAKVNNVRJ7M6GZK665P · Markdown: https://rewindex.com/company/langfuse/incidents/01M2EX7FAKVNNVRJ7M6GZK665P.md · JSON: https://rewindex.com/api/v1/companies/langfuse/incidents/01M2EX7FAKVNNVRJ7M6GZK665P · Generated 2026-10-20T00:05:39.489Z