# Doppler: Major incident: API unavailable due to contention over database locking

**Summary:** Doppler reported a major API outage caused by database lock contention on its Workplace table. Recorded start: 2021-10-01 19:34 UTC; resolution: 2021-10-01 09:00 UTC; computed duration unknown (vendor reported 11 minutes). Service recovered when locks expired; Doppler refactored the affected component to avoid locking. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2021-10-01 19:34 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/wjzdx98zkfrn](https://stspg.io/wjzdx98zkfrn)
- [Company: Doppler](https://rewindex.com/company/doppler.md)
- Versions: before (none: first archived) → after incident\_version:308/vn2v9nchlws8@f7cd38204bc1
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ API unavailable due to contention over database locking
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2021-10-01 19:34 UTC
```

**5. Added: Resolved time**

```diff
+ 2021-10-01 09:00 UTC
```

**6. Added: Update** (resolved) · 2021-10-01 09:00 UTC

```diff
+ Our API experienced an 11 minute outage due to database contention over locking our Workplace table. The issue resolved itself once the locks expired. We've refactored the affected component to achieve the desired result without locking. We'll be exploring a more holistic fix to prevent this issue from occurring in other components.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2021-10-01 19:34 UTC | Major incident: API unavailable due to contention over database locking (this change) | outage |

All Doppler changes: [timeline](https://rewindex.com/company/doppler/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/i032ced27e94715 · Markdown: https://rewindex.com/change/i032ced27e94715.md · JSON: https://rewindex.com/api/v1/changes/i032ced27e94715 · Generated 2026-10-18T02:54:48.707Z