title: Is global variable in rails shared between different users?
body: <p>I have few variables which are used system-wide in my rails app. It runs well if I just have one user using the app. If there are more then one user, many unexpected problem pop out. I don't get any error log, and I have many unexpected behaviors. I believe most of those strange response are due to unexpected change of global variable.</p>
  
  <p>I would like to know, is the value of global variable in Rails shared between different users?</p>
  
  <p>thanks~</p>