In July, GitHub experienced one incident that resulted in degraded performance across GitHub services.
July 21 Incident (13:07 UTC, lasting 59 minutes)
A partial power outage occurred at one of GitHub’s redundant data centers, causing a loss of compute capacity. GitHub updated six service statuses to yellow at 13:12 UTC. Most customer impact happened within the first 10 minutes as requests were rerouted internally.
Root Cause: A partial power outage in one of GitHub’s redundant data centers, which resulted in a loss of compute capacity.
Follow-up Actions: GitHub is conducting reviews of all power feeds with each of its datacenter partners, has identified improvements to reduce recovery time after power was restored, and is evaluating ways to reduce the time to fail over all traffic.