title: How to use CeleryExecutor in airflow without using mysql
body: <p>My backend is <code>redis</code>, but the <code>airflow.cfg</code> file shipped in the airflow package only gave example on using <code>mysql</code> as backend for <code>CeleryExecutor</code>. Basically not sure how to set/replace the following <code>sql_alchemy_conn</code> in <code>airflow.cfg</code> for <code>redis</code> backend.</p>
  
  <pre><code>sql_alchemy_conn = sqlite:////Users/myself/airflow/airflow.db
  </code></pre>
  
  <p>Tried googling by no luck.</p>
  
  <p>Any sample <code>airflow.cfg</code> to use redis as backend for CeleryExecutor?</p>