Learning Akka (Video 10)

This video tutorial explores the basic tools in Akure, focusing on actor ref, actor path, and actor selection. It explains the differences between these concepts, their roles in the actor system, and how they interact. The tutorial includes practical examples, demonstrating how to create and manage actor instances, and how to convert actor selection to actor reference. The video concludes with a summary of the key points discussed.

What is the primary role of an actor reference in Akure?

• To provide a path for actor communication

• To manage the lifecycle of multiple actors

• To serve as a unique identifier for a single actor instance

• To represent the location of an actor in the system

What happens to an actor reference when an actor is terminated?

• It points to a dead letter

• It remains unchanged

• It is deleted from the system

• It automatically updates to a new actor

How does an actor path differ from an actor reference?

• An actor path changes with each actor instance

• An actor path is a unique identifier for an actor

• An actor path represents the hierarchical location of an actor

• An actor path is used to send messages directly

Which of the following is true about actor selection?

• It is a unique identifier for a single actor instance

• It is created from an actor path or name

• It cannot be used to send messages

• It changes with each actor instance

What is the main advantage of using actor selection over actor reference?

• It provides a unique identifier for each actor

• It remains valid even if the actor dies and is recreated

• It simplifies the actor lifecycle management

• It allows direct communication with the actor system

How can you convert an actor selection to an actor reference?

• By changing the actor path

• By creating a new actor instance

• By sending a terminate message

• By using the identify message

What message can every actor handle by default to provide its reference?

• Identify

• Create

• Select

• Terminate