title: What is Duplicate Durable Subsciption in JMS
body: <p>I am struggling to understand Durable subscription. I understand that when a Listener registers itself as a Durable Subscriber to a Topic, it tells JMS - "Hey, I am durable subscriber, from now onwards you need to store all the messages in Topic if I am  not there and pass me those messages when I come back"</p>
  
  <p>Now, if that's the case, why can't two subscribers ask for this durable subscription?</p>
  
  <p>Am I missing something?</p>