title: How to handle bulk number push notification?
body: <p>As the title mentioned above, I have a challenge that needs to overcome. I have a web application with volume more than 50k traffic. We have new requirement to implement push notification recently. Now my concern mostly are related to web application push notification and I know push notification for mobile device can use GCM to handle. I have done many research so far and I got "Websocket", "Server-Sent-Event" are in my list. Before implementing these technologies, I have some concern?</p>
  
  <p>Will these technology make server down if websocket or sse publish too many connection (Maybe 50k or 100k)? As I know these technology are "keep-alive" connection.</p>
  
  <p>Security, as I experience with websocket before, I find no way to authenticate during the connection handshake. I need the connection established with valid jwt token only. </p>
  
  <p>I appreciate someone can advice on these scenario. </p>
  
  <p>Thank you.</p>