# Codecov: Major incident: Upload processing is severely delayed

**Summary:** Codecov Backend upload processing was severely delayed in a major-impact incident starting 2026-07-22 15:02 UTC and resolved at 2026-07-22 21:00 UTC, lasting 5 h 57 min. Codecov implemented a fix and reported the task backlog clearing, with affected users beginning to receive notifications. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-07-22 15:02 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/dc3ck65z843v](https://stspg.io/dc3ck65z843v)
- [Company: Codecov](https://rewindex.com/company/codecov.md)
- Versions: before (none: first archived) → after incident\_version:182/mqzsjlz06dfr@318f12beb76b
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Upload processing is severely delayed
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-07-22 15:02 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-07-22 21:00 UTC
```

**6. Added: Affected components**

```diff
+ Codecov Backend
```

**7. Added: Update** (investigating) · 2026-07-22 15:02 UTC

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

**8. Added: Update** (identified) · 2026-07-22 15:44 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**9. Added: Update** (monitoring) · 2026-07-22 15:44 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**10. Added: Update** (investigating) · 2026-07-22 16:36 UTC

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

**11. Added: Update** (investigating) · 2026-07-22 16:57 UTC

```diff
+ Changes previously implemented showed some improvement, but the issue remains and needs further investigation.  Harness coverage team is currently working on additional investigation and changes.
```

**12. Added: Update** (identified) · 2026-07-22 18:12 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**13. Added: Update** (identified) · 2026-07-22 19:34 UTC

```diff
+ We are continuing to work on a fix for this issue.
```

**14. Added: Update** (identified) · 2026-07-22 19:39 UTC

```diff
+ The issue has been identified as a an issue with Codecov's redis instance. We are working on a fix.
```

**15. Added: Update** (monitoring) · 2026-07-22 20:05 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**16. Added: Update** (monitoring) · 2026-07-22 20:17 UTC

```diff
+ The backlog of tasks is clearing at a consistent rate. We will continue monitoring the situation.
```

**17. Added: Update** (monitoring) · 2026-07-22 20:37 UTC

```diff
+ The backlog of tasks is continuing to clear, users affected in the early stages of the incident should expect to see their notifications.
```

**18. Added: Update** (resolved) · 2026-07-22 21:00 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-07-22 15:02 UTC | Major incident: Upload processing is severely delayed (this change) | degradation |

All Codecov changes: [timeline](https://rewindex.com/company/codecov/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/i6aa0ee30543e3d · Markdown: https://rewindex.com/change/i6aa0ee30543e3d.md · JSON: https://rewindex.com/api/v1/changes/i6aa0ee30543e3d · Generated 2026-10-18T00:38:43.920Z