Right, I'm not linking SPDY and "dynamic topologies". Rather, I'm linking the message-oriented communication of SPDY and 0MQ (and 0MQ is not the only way to achieve this).
Once a request enters your "back office" it should all be message oriented, over persistent connections, with flow control / QoS, and the like.
Once a request enters your "back office" it should all be message oriented, over persistent connections, with flow control / QoS, and the like.