# Courier: Major incident: Delay in Message Processing

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2024-08-19 18:32 UTC · Detected: 2026-10-19 18:33 UTC
- [Source: https://stspg.io/yw59t4tzm7l2](https://stspg.io/yw59t4tzm7l2)
- [Company: Courier](https://rewindex.com/company/courier.md)
- Versions: before (none: first archived) → after incident\_version:730/lxlc37p4m62p@63096e55bc04
- Change 1 of 1 for this incident

Incident page (full timeline): [Delay in Message Processing](https://rewindex.com/company/courier/incidents/lxlc37p4m62p.md)
## What changed

**1. Added: Title**

```diff
+ Delay in Message Processing
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2024-08-19 18:32 UTC
```

**5. Added: Resolved time**

```diff
+ 2024-08-19 21:35 UTC
```

**6. Added: Affected components**

```diff
+ API, Courier - API, Courier - Observability, Courier - Web Application, Observability, Web Application
```

**7. Added: Update** (identified) · 2024-08-19 18:32 UTC

```diff
+ The Courier team identified an issue in our health monitoring involving our message event processing. The issue has been identified and a revert is in place.
```

**8. Added: Update** (monitoring) · 2024-08-19 18:48 UTC

```diff
+ Our team has released a revert to address the regression and it's in the process of merging.
```

**9. Added: Update** (monitoring) · 2024-08-19 18:50 UTC

```diff
+ The release is live, and the team is monitoring it.
```

**10. Added: Update** (monitoring) · 2024-08-19 18:56 UTC

```diff
+ Release is published and building to production. ETA ~45 minutes.
```

**11. Added: Update** (monitoring) · 2024-08-19 20:02 UTC

```diff
+ Fix has been deployed, and enqueued messages have started to go through slowly. Once the bottleneck clears, messages should start to flow normally.
```

**12. Added: Update** (resolved) · 2024-08-19 21:35 UTC

```diff
+ The general pipeline has recovered.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2024-08-19 18:32 UTC | Major incident: Delay in Message Processing (this change) | major |

All Courier changes: [timeline](https://rewindex.com/company/courier/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/if54c4fe6dea29b · Markdown: https://rewindex.com/change/if54c4fe6dea29b.md · JSON: https://rewindex.com/api/v1/changes/if54c4fe6dea29b · Generated 2026-10-20T00:48:43.071Z