title: Publishing data on java 9 Flow to subscribers in a way that only one subscriber will consume it
body: <p>Is there a way to publish data to subscribers in a way that only one subscriber will receive it ?
  What i am trying to achieve is that the subscriber publisher model will work as a queue that has multiple readers but one publisher.
  Once the publisher will publish data, the first subscriber that receives it, will be the only one that will process it.</p>
  
  <p>Thanks in advance !!!</p>