title: How does django-cron work?
body: <p>A normal approach to cron jobs with a django site would be to use cron to run custom management commands periodically.</p>
  
  <p>But I found this <a href="http://code.google.com/p/django-cron/" rel="nofollow">http://code.google.com/p/django-cron/</a></p>
  
  <p>How does it work, without needing cron? What invokes it to poll?</p>
  
  <p>If it just sets up an address for an http request to hit periodically, what if the job takes a long time, won't the server time out?</p>