title: express returns 304 for IE repeative requests
body: <p>I'm experiencing some strange behavior of ExpressJS. On second request to my node.js/express based API URL it always returns 304 Not Modified response code to IE. Other browsers get 200(Chrome/FF). The problem is, that it returns 304 even if the content actually has been changed. I tried to search, and couldn't find anything on the topic. Also I tried to find a difference in requests headers of IE and Chrome, and could see any header that may cause that. Any help will be appreciated.</p>
  
  <p>I have to add the connection goes via SSL, in case it matters</p>