How to stop gracefully the actor system for an akka-http server that must be deployed.

Question

I just created my first rest server with akka-http. The problem is that I do not know how to deploy the server in such a way that I could gracefully shutdown the actor syste

Answer 1

You could add to your main method

Runtime.getRuntime.addShutdownHook(new Thread() {
  override def run() {
    system.shutdown()
    system.awaitTermination()
  }
})

Your app will wait until actor system will be shutt down and all postStop callbacks in your actors will be executed.