title: Real time notification from web server to client bowers
body: <p>I am developing an appointments center web application using php+mysql. what I currently trying to do is to send notification when an appointment has been made from web server to client/user bowers without third party pushers and without using jQuery SetInterval AJAX request. I think SetInterval &amp; AJAX is a bad approach because there would be too much traffic between the client and the server.</p>
  
  <p>How can I implement notifications without polling the server with SetInterval?</p>