# Svix: Major incident: [resolved] delayed delivery for some throttled messages (when endpoint throttling is configured) - normal delivery unaffected.

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2025-07-18 01:29 UTC · Detected: 2026-10-19 18:53 UTC
- [Source: https://stspg.io/0mhghsmf4rn5](https://stspg.io/0mhghsmf4rn5)
- [Company: Svix](https://rewindex.com/company/svix.md)
- Versions: before (none: first archived) → after incident\_version:756/1n3jy69q28d2@86006c599a89
- Change 1 of 1 for this incident

Incident page (full timeline): [\[resolved\] delayed delivery for some throttled messages (when endpoint throttling is configured) - normal delivery unaffected.](https://rewindex.com/company/svix/incidents/1n3jy69q28d2.md)
## What changed

**1. Added: Title**

```diff
+ [resolved] delayed delivery for some throttled messages (when endpoint throttling is configured) - normal delivery unaffected.
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-07-18 01:29 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-07-17 23:00 UTC
```

**6. Added: Update** (resolved) · 2025-07-17 23:00 UTC

```diff
+ Due to a race condition in the throttling code, some message may have been throttled for a much longer time than they were supposed to. The issue has been fixed and everything should be back in order. No action needed.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-07-18 01:29 UTC | Major incident: \[resolved\] delayed delivery for some throttled messages (when endpoint throttling is configured) - normal delivery unaffected. (this change) | major |

All Svix changes: [timeline](https://rewindex.com/company/svix/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/i735d1cd27018b2 · Markdown: https://rewindex.com/change/i735d1cd27018b2.md · JSON: https://rewindex.com/api/v1/changes/i735d1cd27018b2 · Generated 2026-10-19T21:43:55.481Z