 <p>2) I've already answered similar question <a href="http://stackoverflow.com/a/34278630/1991579">here</a>:</p> <blockquote> <p>If you are using 1 thread, for example, in EventLoopGroup for boss group for 2 different bootstraps, it means that you can't handle connections to this bootstraps simultaneously. So in very very bad case, when boss thread handle only connections for one bootstrap, connections to another will never be handled.</p> <p>Same for workers EventLoopGroup.</p> </blockquote> <p>3) You can do it, and it will work fine. But same as in 2: you can't handle server response simultaneously. If it's ok for you, do it.</p>