title: rabbitmq-message-deduplication pluggin
body: <p>I try to use rabbit's plugin: <a href="https://github.com/noxdafox/rabbitmq-message-deduplication" rel="nofollow noreferrer">rabbitmq-message-deduplication</a>.
  One of mandatory parameters is <code>x-cache-size</code>, but I don't understand what unit of this value.</p>
  
  <p>Can someone explain it?</p>
  
  <p>Thank you.</p>