It is a fundamental unit of computation. It has to embody
On receiving a message, an actor can
There is another concept called
Future. Instead of waiting for a computation to complete, the actor returns back a
future (or an exception) which contains an address to the result which can be passed around. Eventually we reach a
result or an exception state with the future.
An actor can have multiple address and one address can point to multiple actors, so there is a many to many relation going on here. What that means is that there can be a proxy actor which just forwards the messages to another actor.