title: Protocol Buffers Java RPC Stack
body: <p>According to <a href="http://en.wikipedia.org/wiki/Protocol_Buffers" rel="noreferrer">this</a> Wikipedia entry:</p>
  
  <p><em>"Protocol Buffers is very similar to Facebook’s Thrift protocol, except it does not include a concrete RPC stack to use for defined services. Since Protocol Buffers was open sourced, a number of RPC stacks have emerged to fill this gap."</em></p>
  
  <p>However, there are no examples of RPC stacks cited.  Can anyone suggest a Java-based implementation of an RPC stack?</p>