# Upstash: Major incident: Connectivity issue impacting Regional Databases in US-East-1

**Summary:** Upstash reported a major connectivity incident affecting Regional Databases in US-East-1 from 2025-12-10 11:50 UTC to 2025-12-10 12:08 UTC, lasting 17 min. Database replicas had connectivity issues with each other and were successfully reconnected; other regions and Global databases were not impacted. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-12-10 11:50 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/53w7vln17ypd](https://stspg.io/53w7vln17ypd)
- [Company: Upstash](https://rewindex.com/company/upstash.md)
- Versions: before (none: first archived) → after incident\_version:171/sqj0hxpbv7kw@aecb9ca5d4cb
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Connectivity issue impacting Regional Databases in US-East-1
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-12-10 11:50 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-12-10 12:08 UTC
```

**6. Added: Affected components**

```diff
+ AWS US-EAST-1, Redis Regional - AWS US-EAST-1
```

**7. Added: Update** (investigating) · 2025-12-10 11:50 UTC

```diff
+ We identified an issue in Regional Databases in US-East-1 where database replicase have connectivity issues with each other.  Other regions are not impacted. Global databases are not impacted. We are working on the issue.
```

**8. Added: Update** (resolved) · 2025-12-10 12:08 UTC

```diff
+ Issue has been identified and replicas were successfully reconnected.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-12-10 11:50 UTC | Major incident: Connectivity issue impacting Regional Databases in US-East-1 (this change) | outage |

All Upstash changes: [timeline](https://rewindex.com/company/upstash/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/ib957e7b0c92b2f · Markdown: https://rewindex.com/change/ib957e7b0c92b2f.md · JSON: https://rewindex.com/api/v1/changes/ib957e7b0c92b2f · Generated 2026-10-18T02:55:10.002Z