- Name two ways in which an actor can change itself in response to the received message.
- What is the purpose of ActorRef?
- Lookup is in the official documentation description of the system guardian. What is the main purpose of it?
- What are the advantages and disadvantages of using Akka FSM?
- In how many ways can an actor in another actor system be accessed? Describe them.
- Why does testing actors require a special toolkit?
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