CDN configuration sync delays

This incident has been resolved.

A fix is being staged on a subset of affected nodes. Impacted nodes are since identifying the issue isolated from CDN traffic and only receiving test traffic. Further updates will be provided after testing concludes and deployment to all affected nodes is complete.

We've been observing 25 to 30 nodes in various PoPs around the world exhibiting constant delays with syncing their configuration since yesterday evening. We've depooled all impacted nodes as a temporary workaround and working on a permanent fix.