Is AggregateCoordinator supervisor?

[varghesep]

Is the role of AggregateCoordinator a supervisor?

[Horusiath]

AggregateCoordinator serves few purposes:

• It works like a router in the sense that it resolves an aggregates that should receive messages and forwards requests to them. Any messages that are addressed to a particular actor while it's not live yet are buffered by coordinator.
• It works as an actor equivalent of managed heap. It creates corresponding actors when necessary and collects them, if their total number will exceed configured threshold.
• Finally it also supervises it's children, dealing with their failures and recreates them if necessary.

[varghesep]

Thanks. For the third option, isn't a supervisor strategy needed?

[Horusiath]

In akka, each actor is prepared to be potential supervisor. Also each one of them has a default supervisor strategy, which in this case is sufficient.