Elevated Latency in APAC and EU

What to do

• Check whether you use Coveralls Coveralls.io Web, Coveralls.io API in apac, eu, us. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2h 7m it lasted.

  Anything that failed between 2025-12-18 14:51 UTC and 2025-12-18 16:58 UTC may need a replay.

• Subscribe to Coveralls's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=coveralls works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Coveralls 3

1. monitoringDec 18, 2025, 2:51 PM UTC

   We had an incident overnight that entailed several server outages affecting APAC and EU users. The impact has been latency in recent build times for those users. We have resolved the issue and are scaling to clear backlogged background jobs. US Central and West users should not be affected.

   provider

2. monitoringDec 18, 2025, 3:31 PM UTC

   Update: - Normal build times have been recovered for all new jobs. - Backlogged jobs are 80% cleared (20% remaining). We will continue clearing backlogged jobs until cleared and monitoring for any further issues.

   provider

3. resolvedDec 18, 2025, 4:58 PM UTC

   Build times are normal for all new builds. Background queues have been cleared of 99% of backlogged jobs; the only ones that remain are for large repos (>5K source files), which should clear in the next 30-45 minutes depending on size. No further effects on latency expected. Closing this incident.

   provider

Corrections

None so far.

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