title: DJango: Multiple instances of an application in a single project
body: <p>I have a django application and i've needed to create multiple instances.  So currently i create a virtualenv for each instance with its own django project.  However this is not scaling well.  What i really need is multiple instances of the application inside a single django project.</p>
  
  <p>Is there any sort of examples or advice for something like this?  I was thinking of using multiple databases, but then each db would get all of the models for all applications in the project.</p>