Akka Supervision

In this section, we will discuss one of the important concepts of Akka Toolkit—Supervision.

First, we will discuss the supervision role in Akka and move to its strategies. We will explore Akka Supervision strategies with some examples in the practical section.

What is supervision?

Supervision is a technique to organize the Akka Actors into a hierarchy, which means creating a parent-child relationship between Actors.

In Akka terminology, the parent Actor is known as supervisor and the child Actor as subordinate:

As shown in the preceding diagram, all Akka Actors are organized into a tree-like hierarchy. The supervisor Actor is responsible for supervising the subordinate Actors. These subordinate Actors again may have child Actors, which may also have subordinates. Final or leaf Actors are responsible for doing the actual work (Business logic).

Note

The Akka supervision concept is different than Akka's monitoring concept.

What is the main goal of Akka's supervision?

The main goal of...