title: Where a Reactor Sink.Many() should have 1 consumer should use unicast or multicast
body: <p>Per <a href="https://stackoverflow.com/questions/66462992/move-from-emitterprocessor-to-sinks-many/">this question</a> I have updated from deprecated <code>EmitterProcessor</code> to <code>Sinks.Many()</code> with the following</p>
  <pre><code>Many&lt;String&gt; sink = Sinks.many().unicast().onBackpressureBuffer();
  </code></pre>
  <p>The <code>sink</code> is filled with <code>String</code> as required and feeds back to a spring boot endpoint. Each client should have their own session via the endpoint.</p>
  <p>Though should I be using</p>
  <pre><code>Many&lt;String&gt; sink = Sinks.many().multicast().directBestEffort();
  </code></pre>
  <p>I want to drop messages to slow consumers.</p>