akka/akka — pull request #1778 by patriknw (2013-10-16 11:38:55+00:00)
Title: +con #3669 Possibility to define routing logic in DistributedPubSub

The new RoutingLogic is an enabler for this small, but requested, feature. It's pretty cool type of cluster router if you think about it. The routees can join the router themselves.