title: What is the default Django session lifetime and how to change it?
body: <p>I can't find a setting for the default session lifetime in <a href="https://docs.djangoproject.com/en/1.10/ref/settings/" rel="nofollow noreferrer">https://docs.djangoproject.com/en/1.10/ref/settings/</a>.</p>
  <p>I know this can be changed manually (<a href="https://stackoverflow.com/questions/14830669/how-to-expire-django-session-in-5minutes">How to expire Django session in 5minutes?</a>).</p>