title: Concurrent users with nodejs and socket.io
body: <p>I am on a project with notification and messaging system between users. So, I started to learn Node.js and socket.io for real time web app. And its about to be finished. But I wanted to know how much concurrent users can socket.io handle. I would be using Amazon web services with auto scaling and elastic load balancing. And would start with <em>m1.medium</em> instance type, i.e vCPU = 1, ECU = 2, Memory = 3.75 GB</p>
  
  <p>So, I would like to know, how much concurrent users, can it handle with only one <em>m1.medium</em> instance. If you could please help, would be highly grateful. Thank you!</p>