title: If I have a queue (SQS, AMQP), how do I notify my worker servers when there is an object in it?
body: <p>A lot of times my queue will remain empty. But when it does fill up, how does that queue notify my server to execute a python script?</p>
  
  <p>I could make it so that the python script hits the queue every 5 seconds, but that's silly.</p>