title: Python Django Global Variables
body: <p>I'm looking for simple but recommended way in Django to store a variable in memory only.  When Apache restarts or the Django development server restarts, the variable is reset back to 0.  More specifically, I want to count how many times a particular action takes place on each model instance (database record), but for performance reasons, I don't want to store these counts in the database.  I don't care if the counts disappear after a server restart.  But as long as the server is up, I want these counts to be consistent between the Django shell and the web interface, and I want to be able to return how many times the action has taken place on each model instance.  </p>
  
  <p>I don't want the variables to be associated with a user or session because I might want to return these counts without being logged in (and I want the counts to be consistent no matter what user is logged in).  Am I describing a global variable?  If so, how do I use one in Django?   I've noticed the files like the urls.py, settings.py and models.py seems to be parsed only once per server startup (by contrast to the views.py which seems to be parsed eache time a request is made).  Does this mean I should declare my variables in one of those files?  Or should I store it in a model attribute somehow (as long as it sticks around for as long as the server is running)?  This is probably an easy question, but I'm just not sure how it's done in Django.</p>
  
  <p>Any comments or advice is much appreciated.
  Thanks,
  Joe</p>