title: Celery 4 + Django + Redis, missing django settings section in documentation?
body: <p>I am trying to setup celery 4 in my Django project which I want Redis as broker. But I cannot find Django specific settings for broker in the Celery 4 <a href="https://docs.celeryproject.org/en/latest/django/first-steps-with-django.html" rel="nofollow noreferrer">documentation</a>? Also the <a href="https://docs.celeryproject.org/en/stable/userguide/configuration.html" rel="nofollow noreferrer">settings documentation</a> for version 4 does not mention about <code>CELERY_BROKER_URL</code> anymore, I am sure the version 3 documentation does mention these settings.</p>
  
  <p>I searched on the web and found these settings:</p>
  
  <pre class="lang-py prettyprint-override"><code>CELERY_BROKER_URL = 'redis://localhost:6379'
  CELERY_RESULT_BACKEND = 'redis://localhost:6379'
  CELERY_ACCEPT_CONTENT = ['application/json']
  CELERY_RESULT_SERIALIZER = 'json'
  CELERY_TASK_SERIALIZER = 'json'
  </code></pre>
  
  <p>But I am not sure if it's for version 3 or version 4. I am utterly confused.</p>