title: How many users Nodejs & Socket.io can support?
body: <p>I got a website that implements the broadcast.emit. that sends message to all users of the site. It is just the simplest implementation of socket.io but I currently having a problem. When I hit about 100 concurrent users. The nodejs server starts to lag until it hangs that I can no longer access my whole website. When we checked the server. The nodejs is taking 100% of the CPU. Is it normal?</p>
  
  <p>I was wondering how many users can socket.io supports? And when this thing happen is there a way to restart the nodejs server programatically? </p>