The sender() will be different on the receiving end. Message sends using tell (also known as !): A tells message M to B. B tells that message to C. C thinks the sender() of message M is B. Message sends using forward: A tells message M to B. B forwards that message to C. C … Read more
It indicates a Symbol. Eg. cfr http://www.scala-lang.org/docu/files/api/scala/Symbol.html : the Scala term ‘mysym will invoke the constructor of the Symbol class in the following way: Symbol(“mysym”).
In your original code, you only started one MailboxProcessor. Make wait() a function, and call it with each yield. Also you are not waiting for them to spin up or receive the messages, which I think invalidates the timing info; see my code below. That said, I have some success; on my box I can … Read more
This is related to a previous question, if not exactly the same! It’s not such a simple question because the actor model of concurrency allows for many different types of applications to be built, from a stateful single-VM application (with a few separate actor classes) to a stateless cluster of thousands of instances of an … Read more
The proper way to handle problems inside akka actors is not to throw an exception but rather to set supervisor hierarchies “Throwing an exception in concurrent code (let’s assume we are using non-linked actors), will just simply blow up the thread that currently executes the actor. There is no way to find out that things … Read more
This answer isn’t really mine. It was produced by Viktor Klang (of Akka fame) with the help of David Pollak (of Lift fame), Jason Zaugg (of Scalaz fame), Philipp Haller (of Scala Actors fame). All I’m doing here is formatting it (which would be easier if Stack Overflow supported tables). There are a few places … Read more
Well, there isn’t. There is just Actor model, and Akka actors and Scala actors are two implementations of that model. All Actor model says that your concurrency primitives are actors, which can: receive a message and decide what to do next depending on the content of the message, including: send messages to any actors they … Read more
.NET Actor Model frameworks: Proto.Actor Actors Virtual Actors https://github.com/AsynkronIT/protoactor-dotnet Akka.NET Actors https://github.com/akkadotnet/akka.net Microsoft Orleans Virtual Actors https://github.com/dotnet/orleans
The C++ code does not deal with fairness, isolation, fault detection or distribution which are all things which Erlang brings as part of its actor model. No actor is allowed to starve any other actor (fairness) If one actor crashes, it should only affect that actor (isolation) If one actor crashes, other actors should be … Read more
Shamelessly copied [awesome] official doc (look Send messages section for more): Messages are sent to an Actor through one of the following methods. ! means “fire-and-forget”, e.g. send a message asynchronously and return immediately. Also known as tell. ? sends a message asynchronously and returns a Future representing a possible reply. Also known as ask.