title: Micronaut's HttpClient: event-loop-group, num-of-threads, thread-factory: how do they work in conjunction?
body: <p>I come from the Spring Framework and now I'm on a micronaut project. I know very little about netty and its concepts yet and with that I have a doubt that the micronaut documentation is not clear to me.</p>
  <p>I'm in doubt about the settings below:</p>
  <ul>
  <li>micronaut.http.client.event-loop-group</li>
  <li>micronaut.http.client.num-of-threads</li>
  <li>micronaut.http.client.thread-factory</li>
  </ul>
  <p>I would like to understand:</p>
  <ul>
  <li><p>Considering that it is possible to define the number of threads of an event-loop-group, does it make sense to configure an event-loop-group and ALSO client.num-of-threads / client.thread-factory?</p>
  </li>
  <li><p>If they can be used together: How do they work together?</p>
  </li>
  <li><p>If they cannot be used together: How do they differ? What is the most appropriate use case for each?</p>
  </li>
  </ul>