cluster {
                seed-nodes = ["akka.tcp://TradingRoomActors@localhost:8083"]
                roles = ["traderworker"]
                singleton {
                  singleton-name = "TraderActor"
                  role = "traderworker"
                  hand-over-retry-interval = 1s
                }
                singleton-proxy {
                  singleton-name = "TradesActor"
                  role = "tradesworker"
                  singleton-identification-interval = 1s
                  buffer-size = 100
                }
            }