We had a significant outage this past Friday, October 21. Many customers were not able to reach rollbar.com or api.rollbar.com, some data was lost, and a few customers experienced cascading issues caused by our API outage. The root cause was a Distributed Denial of Service (DDoS) attack on our DNS provider.
We weren't the only service that had issues on Friday, but that is no excuse—we know that our customers rely on Rollbar as a critical monitoring service and it's all the more important that we are up when everything else is down. We'd like to share some of the details about what happened and what we're doing to prevent this kind of issue from happening again.