scala – Akka actorSelection vs actorOf差异

actorSelection是actor树中路径的“指针”.通过使用resolveOne,您将在该路径下获得已存在的actor的actorRef – 但是actorRef需要时间来解析,因此Future.

这里有更详细的解释：
http://doc.akka.io/docs/akka/snapshot/general/addressing.html

An actor reference designates a single actor and the life-cycle of the reference matches that actor’s life-cycle; an actor path represents a name which may or may not be inhabited by an actor and the path itself does not have a life-cycle,it never becomes invalid. You can create an actor path without creating an actor,but you cannot create an actor reference without creating corresponding actor.