# Honeycomb: Major incident: Delays in SLO, Service Maps processing

**Summary:** Honeycomb reported a major US1 degradation starting 2025-10-20 14:16 UTC, with SLO and Service Maps processing delays exceeding 5 minutes and later querying and trigger delays. Constrained EC2 capacity in AWS us-east-1 was cited; resolution came at 2025-10-21 15:41 UTC after 25 h 24 min, with no customer data reaching its load balancers lost. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2025-10-20 14:16 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/ljl2hzddl75s](https://stspg.io/ljl2hzddl75s)
- [Company: Honeycomb](https://rewindex.com/company/honeycomb.md)
- Versions: before (none: first archived) → after incident\_version:279/yf7xhvnz3gpj@64f0cfd9aa95
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Delays in SLO, Service Maps processing
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-10-20 14:16 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-10-21 15:41 UTC
```

**6. Added: Affected components**

```diff
+ ui.honeycomb.io - US1 Querying, ui.honeycomb.io - US1 Trigger & SLO Alerting
```

**7. Added: Update** (monitoring) · 2025-10-20 14:16 UTC

```diff
+ Due to constrained EC2 instance capacity in the AWS us-east-1 region, we are choosing to allocate the capacity we have to incoming events and telemetry. As such, customers may see over 5 minute delays in our processing of - SLOs - Service Maps We do not expect a degradation of our core ingest -> query flow, and we do not expect triggers to be impacted
```

**8. Added: Update** (monitoring) · 2025-10-20 15:14 UTC

```diff
+ SLO processing has recovered. Service Maps continues to be degraded but historical data can be queried.
```

**9. Added: Update** (monitoring) · 2025-10-20 15:30 UTC

```diff
+ The networking issues in us-east-1 is affecting our query engine - customers may see errors or delays when running queries as a result.
```

**10. Added: Update** (monitoring) · 2025-10-20 17:39 UTC

```diff
+ We’re currently observing that querying is seeing signs of recovery. We are continuing to monitor the situation
```

**11. Added: Update** (monitoring) · 2025-10-20 20:06 UTC

```diff
+ AWS is starting to show signs of recovery. Querying remains partially impacted and may take longer to return results. We are continuing to monitor the situation.
```

**12. Added: Update** (monitoring) · 2025-10-20 23:08 UTC

```diff
+ Service maps are up and running and errors have resolved. Querying, triggers and SLOs are continuing to improve and customers may see delays as functionality continues to improve. We are continuing to monitor the situation.
```

**13. Added: Update** (monitoring) · 2025-10-21 00:11 UTC

```diff
+ Honeycomb core functionality is operational. Service maps are up and running and errors have resolved. Querying, triggers and SLOs are continuing to improve and customers may see delays as functionality continues to improve. This is our final update for the night unless the situation degrades. We will continue to monitor the situation.
```

**14. Added: Update** (resolved) · 2025-10-21 15:41 UTC

```diff
+ This incident has been resolved. At no point did we lose any customer data that hit our load balancers. Querying has been stable for hours, and all features that were degraded are functional.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-10-20 14:16 UTC | Major incident: Delays in SLO, Service Maps processing (this change) | degradation |

All Honeycomb changes: [timeline](https://rewindex.com/company/honeycomb/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/if85d7ff01e9248 · Markdown: https://rewindex.com/change/if85d7ff01e9248.md · JSON: https://rewindex.com/api/v1/changes/if85d7ff01e9248 · Generated 2026-10-18T02:54:47.785Z