title: Is it possible to skip delegating a celery task if the params and the task name is already queued in the server?
body: <p>Say that I have this task:</p>
  
  <pre><code>def do_stuff_for_some_time(some_id):
      e = Model.objects.get(id=some_id)
      e.domanystuff()
  </code></pre>
  
  <p>and I'm using it like so:</p>
  
  <pre><code>do_stuff_for_some_time.apply_async(args=[some_id], queue='some_queue')
  </code></pre>
  
  <p>The problem I'm facing is that there are a lot of repetitive tasks with the same arg param and it's boggling down the queue.</p>
  
  <p>Is it possible to apply async only if the same args and the same task is not in the queue?</p>