title: SignalR for chat for big users base
body: <p>I have an ASP.NET MVC3 application.</p>
  
  <p>If my application had a large number of users – let's say 100,000 – hypothetically, if all users were talking to each other and I used SignalR, would there be 100,000 long polling connections? Would these cause some sort of denial of service? </p>
  
  <p>Should I be using AJAX HTTP instead? Or would SignalR be smart enough to release the connection to resource pool when no activity is found for certain period of time? </p>
  
  <p>When would using signalR for chat be recommended for chat versus AJAX?</p>