Apparently #Bluesky has one centralized service, the "relay", which did not go down, but it has distributed its users across multiple PDSs (and users can roll their own PDS). The idea is that any individual PDS can go down and so long as the relay keeps working all the other users are OK. But, ALL of the company's PDSs went down. 🤔 We are being told that a DDOS attack targeted ALL of #Bluesky's PDSs and they all went down simultaneously. Suppose this is possible, but it does seem odd.