Book Image

Akka Cookbook

By : Piyush Mishra, Vivek Mishra, Héctor Veiga Ortiz
Book Image

Akka Cookbook

By: Piyush Mishra, Vivek Mishra, Héctor Veiga Ortiz

Overview of this book

Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework.
Table of Contents (18 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Introduction


As mentioned before, Akka actors are distributed by default. This concept allows you to expand your actor system beyond a single JVM. Akka provides mechanisms to connect actors running in different JVMs seamlessly. In a production system, you want to ensure high availability and resiliency; Akka remoting and Akka clustering help you achieve this.

Every actor has an address that is unique within an actor system. This address has the following format: <actor system>/<actor path>. Although this format is correct within a local actor system, when you are accessing remote actors, the fully qualified format is this: <protocol>://<actor system>@<host>:<port>/<actor path>. This concept is also known as location transparency.

We need to differentiate between two ways of accessing remote actors:

  •  Akka remoting: This means that an actor knows the location of the remote actor and uses its fully qualified address to communicate with it. The communication...