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Sonar Outage History

Every past Sonar outage tracked by IsDown, with detection times, duration, and resolution details.

There were 110 Sonar outages since April 2022. The 26 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 1, 2026

May 2026: US - Job Processing Delayed

Detected May 1, 2026 11:14 AM EDT · Resolved May 1, 2026 3:45 PM EDT · Duration about 5 hours

Sonar's US job processing system experienced delays for 4.5 hours, preventing jobs from being processed in a timely manner. The engineering team investigated the issue and implemented a fix. The incident was resolved after a monitoring period to ensure the fix was effective.

Minor April 10, 2026

April 2026: US - Job Processing Delayed

Detected Apr 10, 2026 12:19 PM EDT · Resolved Apr 10, 2026 3:29 PM EDT · Duration about 3 hours

Sonar experienced delays in job processing and scheduled events in the US region for 3.2 hours. The issue affected the platform's ability to process jobs in a timely manner. A fix was implemented and the incident was resolved after monitoring confirmed the solution was effective.

Minor March 1, 2026

March 2026: US Sonar Application Slow or Unresponsive

Detected Mar 1, 2026 9:58 AM EST · Resolved Mar 2, 2026 2:45 AM EST · Duration about 17 hours

The US Sonar application experienced increased latency and unresponsive requests affecting both the web application and GraphQL API for 16.8 hours. The issue was identified and multiple fixes were implemented throughout the incident, with additional stability measures applied. The incident was fully resolved after extended monitoring confirmed system stability.

Minor March 1, 2026

March 2026: US Sonar Increase in Nginx Errors

Detected Mar 1, 2026 1:00 AM EST · Resolved Mar 1, 2026 5:50 AM EST · Duration about 5 hours

Sonar experienced increased Nginx errors affecting the US Web Application and GraphQL API for 4.8 hours. The incident caused application slowness and elevated error rates in the US datacenter. The root cause was identified and fixed, with application health returning to normal after a gradual recovery period.

Minor February 26, 2026

February 2026: US Sonar Slowness

Detected Feb 26, 2026 10:32 AM EST · Resolved Feb 26, 2026 3:09 PM EST · Duration about 5 hours

Sonar experienced slowness issues affecting the US Web Application and GraphQL API for 4.6 hours. The engineering team identified and implemented a fix, with some latency improvements observed during the investigation process. The incident was resolved after monitoring confirmed the fix was successful.

Minor February 25, 2026

February 2026: US Sonar Slowness

Detected Feb 25, 2026 12:00 PM EST · Resolved Feb 25, 2026 2:36 PM EST · Duration about 3 hours

Sonar experienced slowness issues affecting the US Web Application and GraphQL API for 2.6 hours. The engineering team identified the root cause and implemented a fix. The incident was resolved after a monitoring period to ensure stability.