Add specific dispatcher for cluster operations

Author: jmarin

cluster/src/main/resources/application.conf

@@ -33,6 +33,10 @@ akka {
 
     metrics.enabled = off
 
+    use-dispatcher = cluster-dispatcher
+
+    auto-down-unreachable-after = off
+
   }
 
   extensions = ["de.heikoseeberger.constructr.ConstructrExtension"]
@@ -64,3 +68,12 @@ clustering {
   port = ${?APP_PORT}
 }
 
+cluster-dispatcher {
+  type = "Dispatcher"
+  executor = "fork-join-executor"
+  fork-join-executor {
+    parallelism-min = 2
+    parallelism-max = 4
+  }
+}
+