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

Consuming services

A microservices architecture is formed by multiple different microservices that communicate with each other to work together and achieve a task. For example, your architecture could have an authentication microservice responsible for authorizing and authenticating users. Other services would use the authentication microservice to check the permissions of the user making the request. So, the rest of the services would need to communicate with the authentication service before proceeding with any other task. Lagom provides an elegant mechanism to locate an external service (through the Service Locator) and interact with it by knowing its API module.

In this recipe, we will look at how we can communicate with other Lagom services without the need to manually create a REST client, a serialization framework, or any other elements. 

Getting ready

To step through this recipe, we need to import the Lagom Akkacoobook project that we created in the initial recipe of this chapter; all...