Outage in Coveralls

Elevated Latency

Resolved Minor
April 24, 2025 - Started 14 days ago - Lasted about 8 hours
Official incident page

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Outage Details

We are investigating elevated latency in our background jobs system. Some users have also reported receiving Timeout errors while trying to load web pages.
Components affected
Coveralls .io Web Coveralls .io API
Latest Updates ( sorted recent to last )
RESOLVED 14 days ago - at 04/24/2025 11:06PM

We’re now closing this incident, several hours after restoring full system stability. Over the past 4 hours, we’ve continued to monitor key requests and queries closely. During that time, we identified a number of previously long-running queries that we’ve either:

- Optimized immediately, based on new platform characteristics; or
- Added to a short-term optimization backlog for tuning over the next few days.

These efforts are part of our ongoing work to adapt all app queries to the updated infrastructure context.

MONITORING 14 days ago - at 04/24/2025 08:57PM

Site remains fully operational and performance for all new builds is normal; but we will continue monitoring request times and individual query times to identify long-running queries that may have caused recent delayed job backups / spikes in latency.

MONITORING 14 days ago - at 04/24/2025 07:35PM

We believe performance has been restored, and site is fully operational, but we will continue to clear any previously blocked (or retry) jobs we discover in background job queues and monitor performance stats as they clear.

MONITORING 14 days ago - at 04/24/2025 06:01PM

Monitoring for further issues. Performance for new builds is normal. Waiting for dequeue metrics to fall below 50% normal before we lift "degraded performance" rating.

MONITORING 14 days ago - at 04/24/2025 05:25PM

We believe the issue is resolved. We are scaling infrastructure to clear any delayed background jobs, and monitoring to ensure latency stays within normal range.

MONITORING 14 days ago - at 04/24/2025 04:46PM

We are continuing to monitor for any further issues.

MONITORING 14 days ago - at 04/24/2025 04:15PM

A fix has been implemented and we are monitoring the results.

IDENTIFIED 14 days ago - at 04/24/2025 03:54PM

The issue has been identified and a fix is being implemented.

INVESTIGATING 14 days ago - at 04/24/2025 03:35PM

We are investigating elevated latency in our background jobs system. Some users have also reported receiving Timeout errors while trying to load web pages.

Latest Coveralls outages

Elevated Latency - 8 days ago
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