Akka is a toolkit and runtime for building highly concurrent, distributed, and fault tolerant event-driven applications on the JVM

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In Actor Pattern (AKKA.Net) Should actors be classes OR Objects?

Im Just getting started with actor pattern. Coming from UnitOfWork pattern. Lets say i want to create Actor Pattern for a Employee Management System to mark they are present or absent. The Problem Im ...
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How do I design concurrent scalable system with guaranteed ordering? How about Akka?

I have designed a simple PoC system that processes a feed of prices that tick. It consumes a stream of "Ticker, Price" objects off JMS and updates a map, so that the map simply contains the latest ...
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349 views

akka and futures, which ExecutionContext should be used

Following this blog by @Tomasz Nurkiewicz we can see that 4 different approaches are available for picking the ExecutionContext, when interacting with akka actors, for scala futures to run on. import ...
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2answers
334 views

Why is Akka good for concurrency?

I am new to Akka and actor framework - I am sure I am missing something obvious, please accept my apologies in advance. I keep reading that one of the main points to choose Akka is the way it manages ...
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Add-on hot deployable modules for Akka actors?

I'm trying to build a small spray io - akka distributed application targeted towards smaller devices like the Raspberry Pi and BeagleBone Black. The aim is to be able to talk to other devices that ...
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1k views

Does Akka obsolesce JMS/AMQP message brokers? [closed]

I spent the last week deep diving into the Akka docs and finally understand what actor systems are, and the problems that they solve. My understanding (and experience with) traditional JMS/AMQP ...
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375 views

Promise Akka Play Java Sequence

I have an actor which is having three asynchronous web service calls. Lets say A,B and C. All return promise objects which has their respective response. I added loggers processA,processB,processC ...
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1answer
400 views

Polyglot Node.js with Typesafe Akka for Actor Model

I have a case that needs to manipulate a large stream of JSON and inject it into Apache HBase. Our system works on Node.js with Mongo then, since we need to enhance performance, so HBase is choosen to ...
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381 views

Is Erlang really an actor model language?

I was reading this article: http://www.doc.ic.ac.uk/~nd/surprise_97/journal/vol2/pjm2/ And it mentions that: ...in the actor model even an integer is represented as an actor... Wikipedia ...
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84 views

Actors in a sequential protocol handshake

I am new to actors and trying to implement a very sequential protocol handshake (over websockets). This is in Scala/Akka. It goes something like this: HTTPs connection is established then upgraded ...
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What is a “lifted representation”?

Just ran across this term here: http://www.codemesh.io/codemesh2014/viktor-klang "We'll demonstrate the Flow API—a lifted representation—as well as a pluggable way of transforming the lifted ...
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388 views

ZeroMQ and Majordomo protocol

I am learning ZeroMQ and came across the Majordomo Protocol. I am wondering if I'm understanding this correctly, is the use case the same as.. for example.. the Microsoft Azure AppFabric service? ...
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Why is Akka being marketed as reactive? Is Actor Model reactive?

As far as I understand the Actor Model and the Reactive Programming are separate concepts. Actor Model does not seem to be inherently reactive to me. However the Akka framework which is an Actor ...
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Entities (DDD) when using CQRS on Akka

When using Akka, CQRS style, is still there a place for Entities? Or does everything now go to Aggregates, implemented as Actors + Value Objects. I notice that most entities are written as mutable ...
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1answer
2k views

When should I use ZeroMQ and when should I use Akka?

My understanding of Akka is that it allows you to define groups of mini-threads ("Actors") and then have them communicate with each other (and do work) using events. My understanding of ZeroMQ is ...
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4answers
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When is it NOT good to use actors in akka/erlang?

I've been working with akka for 7-8 months now daily. When I started, I would be working on applications and notice that actors would be used basically anywhere once inside the actor system for ...
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5answers
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What is the difference between a Future and a Promise?

What is the difference between a Future and a promise? (In Akka and Gpars.) They look the same to me as both block and return the value of the future when get is called and a promise is to get the ...
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1answer
2k views

Using akka actors with service spring beans

Do you think that using akka actors in front of transactional service beans, is a good idea ? Actors are waked up by a facade used by a client application, and actor use a message to handle right ...
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1answer
2k views

How can I scale spring application context?

I'm currently working on a project that need to be dynamically scaled on demand according to the need. My question is about scaling spring context. My web application has a classical multi module ...
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2answers
352 views

Error checking in actor-based paradigm

I have an existing Scala application that I am trying to refactor in order to use Akka. One of the problems I have is how to manage error-checking in actor-based applications. Usually error-checking ...