title: IS PHP Cron the right one for checking and notifying bidding winner?
body: <p>I am being asked by my client for making instant notification to the bid winner when the bid expires. </p>
  
  <p>Since the ending time is varying and set by users while registering bids, I am planning of setting cron jobs to run every 5 mins and check any finished bids without notification and notify all of them.</p>
  
  <p>Do i have another good method to accomplish this task?</p>