Book Image

Akka Cookbook

By : Vivek Mishra, Héctor Veiga Ortiz
Book Image

Akka Cookbook

By: 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
About the Authors
About the Reviewer
Customer Feedback


Throughout the previous chapters of the book, we have looked at how actors behave and how we can easily create distributed, concurrent and failure-tolerant applications by combining them. Also, actors can be used to create more complex libraries. Two good examples are Akka Streams and Akka HTTP. However, many other use cases require the use of actors themselves. 

In this chapter, we will go through different actor pattern recipes to showcase useful common scenarios. We will learn important concepts in order to prevent mailbox message overflow using a Master Slave work pattern, pulling and balancing the workload across a set of actors. We will revisit how to stop children actors in an orderly manner by creating and an elegant way to identify when all actors in an actor system are stopped to terminate it, which might be handy in dynamic environments.

We will also explain the convenient API Akka provided to easily create Finite State Machines just by providing a set of states and...