# Sentry: Major incident: Delayed Error ingestion in our US region

**Summary:** Sentry reported a major degradation affecting US Error Ingestion and US Errors Alerting, starting 2026-08-12 11:45 UTC and resolved at 2026-08-12 14:48 UTC (3 h 2 min). Error ingestion and alerts were delayed; Sentry applied a fix and confirmed the backlog was processed. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-08-12 11:45 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/tcdgnyx93p0q](https://stspg.io/tcdgnyx93p0q)
- [Company: Sentry](https://rewindex.com/company/sentry.md)
- Versions: before (none: first archived) → after incident\_version:288/1vb2qjjjm88k@3dfb867b2f7d
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Delayed Error ingestion in our US region
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-08-12 11:45 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-08-12 14:48 UTC
```

**6. Added: Affected components**

```diff
+ Alerting - US Errors Alerting, US Ingestion - US Error Ingestion
```

**7. Added: Update** (investigating) · 2026-08-12 11:45 UTC

```diff
+ We are actively investigating this issue.
```

**8. Added: Update** (investigating) · 2026-08-12 12:36 UTC

```diff
+ We've identified the root cause and are actively working on mitigation.
```

**9. Added: Update** (identified) · 2026-08-12 13:28 UTC

```diff
+ A fix has been made and the backlog is being processed.
```

**10. Added: Update** (monitoring) · 2026-08-12 14:21 UTC

```diff
+ We're processing new events and alerts in realtime, and continue to process the tail of the backlog.
```

**11. Added: Update** (resolved) · 2026-08-12 14:48 UTC

```diff
+ The backlog has been processed
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-08-12 11:45 UTC | Major incident: Delayed Error ingestion in our US region (this change) | degradation |

All Sentry changes: [timeline](https://rewindex.com/company/sentry/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i9889e586dcc7ca · Markdown: https://rewindex.com/change/i9889e586dcc7ca.md · JSON: https://rewindex.com/api/v1/changes/i9889e586dcc7ca · Generated 2026-10-18T00:37:56.103Z