title: Yii2 Session Storage in Database, too many rows?
body: <p>I am using Yii2 DbSession but after few days I am noticing that the session  table now has even those rows whose expiry was few days ago. Currently it has 23376 rows and it is continuously increasing. </p>
  
  <p>Gc Probability is 0 and Session Timeout is 1440</p>
  
  <p>Is there something wrong?</p>
  
  <p>--EDIT--
  Actually I want to know that is the gcprobability value to 0 is causing not cleaning of expired session rows?</p>