# Datadog: Major incident: Delayed data streams data

**Summary:** Datadog reported a major Data Streams Monitoring degradation in US1 from 2026-07-10 14:09 UTC to 2026-07-10 15:59 UTC, lasting 1 h 50 min. Latency metrics were delayed or not updating for some users, potentially preventing monitor alerts. A fix was implemented; a small percentage of data was still being backfilled before resolution. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-07-10 14:09 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/y5323mlt6x4g](https://stspg.io/y5323mlt6x4g)
- [Company: Datadog](https://rewindex.com/company/datadog.md)
- Versions: before (none: first archived) → after incident\_version:274/9qt73ty9p9ph@b318487e226d
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Delayed data streams data
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-07-10 14:09 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-07-10 15:59 UTC
```

**6. Added: Affected components**

```diff
+ Data Streams Monitoring
```

**7. Added: Update** (investigating) · 2026-07-10 14:09 UTC

```diff
+ We are currently investigating an issue affecting Data Streams Monitoring (DSM) in our US1 datacenter. As a result, data stream latency metrics may be delayed or not updating for some users. If you have monitors configured on those metrics, they may fail to alert as expected during this incident. We are not aware of any data loss at this time. Our engineering team is actively working on a fix, and we'll follow up with more information shortly.
```

**8. Added: Update** (investigating) · 2026-07-10 14:35 UTC

```diff
+ We are continuing to investigate the issue.
```

**9. Added: Update** (monitoring) · 2026-07-10 15:18 UTC

```diff
+ A fix has been implemented and we are monitoring the results. A small percentage of data sent between 6:23 UTC and 14:43 UTC is still being backfilled.
```

**10. Added: Update** (resolved) · 2026-07-10 15:59 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-07-10 14:09 UTC | Major incident: Delayed data streams data (this change) | degradation |

All Datadog changes: [timeline](https://rewindex.com/company/datadog/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/ia9ca9197703d55 · Markdown: https://rewindex.com/change/ia9ca9197703d55.md · JSON: https://rewindex.com/api/v1/changes/ia9ca9197703d55 · Generated 2026-10-18T02:31:44.070Z