title: Javascript 1 second apart ajax requests? Resource usage?
body: <p>I have a long-term goal of eventually creating a chat sort by any means, but for now I'd like to just have a simple one with some Mysql and ajax calls. </p>
  
  <p>To make the chat seem instant, I'd like to have the ajax request interval as fast as possible. I get the feeling if it's as low or lower than a second, it's going to bog down the browser, the user's internet, or my server. </p>
  
  <p>Assuming the server doesn't return anything, how much bandwidth and cpu/memory would the client use with constant, one second apart ajax calls? </p>
  
  <p><strong>edit:</strong> I'm still open to suggestions on how I can do a chat server. Anything that's possible with free hosting from x10 or 000webhost. I've been told of Henoku but I have no clue how to use it.</p>
  
  <p><strong>edit:</strong> Thanks for the long polling suggestion, but that uses too much cpu on the servers.</p>