In Akka 2.0.2 authors change a procedure to set a load balance. Example to set router: val system = ActorSystem("HarvestSystem") val router = system.actorOf(Props[SiteTestActor].withRouter(RoundRobinRouter(nrOfInstances = testSiteWorkes)))   implicit val timeout = Timeout (10 seconds)   val countUrl=index.values.size val countDownUrl = new CountDownLatch(countUrl)   var cnt=0 index.values.foreach(url =>{   Sys.info("HarvestActor::"+actorName,"Start site test "+cnt+": "+url.toString,4) cnt+=1   […]