# Iterable: Ingestion Delays and API Failures on C18

> Iterable status incident “Ingestion Delays and API Failures on C18” on 2025-07-28: impact minor (vendor’s label), 27 min, 4 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7
Last updated: 2025-07-28T10:48:21Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-07-28 10:21 UTC · Resolved: 2025-07-28 10:48 UTC · Duration: 27 min
- Updates: 4 · Affected components: Cluster 18 - List Uploads, List Uploads, Cluster 18 - User Deletions, User Deletions, Cluster 18 - User Updates, User Updates
- [Vendor status page: https://stspg.io/ltfhlb864gql](https://stspg.io/ltfhlb864gql)
- [Company: Iterable](https://rewindex.com/company/iterable.md)

## Timeline of updates

- **investigating** 2025-07-28 10:21 UTC: Beginning at 2:30 AM PDT, Iterable Engineering detected an issue with our C18 clusters leading to delays on user updates, list uploads, user deletion, and event processing.  Additionally, there were failures on API calls to endpoints such as event/track for a period of time. Next update at 3:45 AM PDT or sooner.
- **monitoring** 2025-07-28 10:39 UTC: Ingestion lag for C18 is recovering and success rates for all services are back to normal.  We will continue to monitor the cluster until the ingestion backlog has fully cleared. Next update at 4:30 AM PDT or sooner.
- **monitoring** 2025-07-28 10:39 UTC: We are continuing to monitor for any further issues.
- **resolved** 2025-07-28 10:48 UTC: The system has finished working on backlog of data and the data is caught up. All systems are operational and have no issues. Engineering will continue to monitor the cluster performance.

## Cite this

Status incident (vendor impact label: minor) posted by Iterable, started 2025-07-28 10:21 UTC, resolved after 27 min, 4 update(s).

- Canonical URL: https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7
- Citation: Iterable, “Ingestion Delays and API Failures on C18” (2025-07-28 10:21 UTC). Archived by Rewindex: https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7 (CC BY 4.0).
- Markdown link: `[Iterable: Ingestion Delays and API Failures on C18 (2025-07-28)](https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7)`


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Canonical: https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7 · Markdown: https://rewindex.com/company/iterable/incidents/vkk0xz7blsm7.md · JSON: https://rewindex.com/api/v1/companies/iterable/incidents/vkk0xz7blsm7 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:39:37.367Z