Question

我有以下代码需要运行100次：

   val system = ActorSystem("mySystem")
   val myActorObject = system.actorOf(Props[MyActorClass], name = "myactor")
   implicit val timeout = Timeout(60 seconds)
   val future = myActorObject ? Request1
   val result = Await.result(future, timeout.duration)

问题是：假设前两个语句只能被调用一次，我应该缓存这些变量还是Akka呢？

Answer 1

不要让actor系统创建和actor创建成为重复代码的一部分。一旦创建了演员。使用ActorRef可以尽可能多地完成。

val system = ActorSystem("mySystem")
val myActorObject = system.actorOf(Props[MyActorClass], name = "myactor")

像这样的东西

val futureList = for(_ <- 1 to 1000) yield {
  implicit val timeout = Timeout(60 seconds)
  val future = myActorObject ? Request1
}

val finalF = Future.sequence(futureList)

val result = Await.result(future, timeout.duration)

Answer 2

在游戏中！（+ 2.5.x）您可以通过注入获得系统。 e.g。

@Singleton
class MyController @Inject() (system: ActorSystem) extends Controller {

  val myActor = system.actorOf(MyActorClass.props, "myactor")

  //...
}

然后你可以有一个终点来根据需要多次调用actor，例如

def sayHello(name: String) = Action.async {
  (myActor ? name).map { message => Ok(message) }
}

你演员中的代码可能是这样的

class MyActorClass extends Actor {
   def receive = {
    case name: String => sender() ! s"hello $name"
  }
}

object MyActorClass {
    def props: Props = Props(classOf[MyActorClass ])
}

Akka缓存actor调用吗？

2 个答案: