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I wonder what they are using websockets for? I haven't seen push notifications on SO.

• deanward81 7y ago
  We use websockets for pushing things like comments, answers and question edits as they are added as well as for notifications like inbox messages and reputation updates. Our websocket process currently has ~500k concurrent connections across 9 web servers. Nick has some information on his blog (https://nickcraver.com/blog/2016/02/17/stack-overflow-the-architecture-2016-edition/#websockets-httpsgithubcomstackexchangenetgain https://nickcraver.com/blog/2016/02/17/stack-overflow-the-ar...) although it’s a little outdated - we no longer use Netgain, we use the .NET Core websockets bits instead.
  • winrid 7y ago
    Thanks!