title: How does RabbitMq clustering help scalability?
body: <p>I want to build scalable RabbitMq system. I have gone through its <a href="https://www.rabbitmq.com/clustering.html" rel="nofollow noreferrer">official documentation</a> but according to <a href="https://stackoverflow.com/questions/36650061/how-to-make-rabbitmq-scalable">this question</a> and <a href="https://stackoverflow.com/questions/36766513/is-rabbitmq-clustering-including-scalability-too">this one</a>. it seems clustering with HA-mirrored queues contradicts scalability as adding more nodes deteriorates performance.</p>
  
  <p>I mean, If I have clustered system of (let's say) 3 nodes, how can clustering (without HA policy enabled) help increase throughput 
  as opposed to having a system with 3 disconnected node?</p>
  
  <p>Thanks in advance.</p>