# Slow response times observed on US API services

- Provider: [Novu](https://down.guide/novu)
- Level: confirmed
- Impact: Major outage
- lasted 8h 58m
- started 2025-10-15 10:36 UTC
- us
- id: DWN-fece1a3486
- Official page: https://novustatus.com/incident/743992

## Updates from Novu
### 2025-10-15 10:36 UTC: update
The US API cluster is affected in slow response times and timeouts observed. The team is working on the issue

### 2025-10-15 10:53 UTC: update
Inbox API endpoints are experiencing a downtime

### 2025-10-15 11:05 UTC: update
Inbox endpoints are now back to operational mode, observing the response times. A DB operation has been performed to roll the affected nodes

### 2025-10-15 11:28 UTC: update
We are still experiencing high load on the secondary nodes and working to restore their operational metrics

### 2025-10-15 13:25 UTC: update
Response times are returned to normal times, except preference endpoints which still experience slow response times in some scenarios. We are performing database operations on the remaining secondary node. And Working with out database vendor on identifying the root cause.

### 2025-10-15 19:34 UTC: resolved
The slow secondary instance was resolved and query times are back to normal on our API, we are working with our cloud vendor for a full RCA. The incident post mortem is available at: https://www.notion.so/novuhq/Preference-Schema-Indices-Incident-October-14-15-2025-285d03ad838f8024accacb4b589ec277

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