June 2017
Intermediate to advanced
360 pages
10h 2m
English
In the Actor programming model, an Actor can spawn other Actors. In such a scenario, the parent Actors are known as the supervisor and the Actors that it spawns are called subordinates. The subordinates carry out individual tasks of an operation that the supervisor is assigned to perform. The hierarchy may extend to deeper levels, that is, a subordinate may further delegate tasks to its subordinates and itself act as supervisor for those subordinates:

The role of supervisor is to aggregate the responses of the subordinates and report it to its parent, which may be the application itself or another supervisor. ...
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