Applications hosted on APPUiO were not accessible for ~30 minutes. The reason was a huge amount of traffic resulting in a Denial of Service attach kind of situation. We were able to mitigate and services are supposed to be reachable again. We are investigating in more details and will post updates here later.
Update: In addition to the mitigation, we were now able to identify source of the offending traffic. We are in contact with the related parties to get an understanding of their use case so we can find ways to prevent this from happening again.
The effective downtime was between 08:00 and 08:21.