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
About the Authors
About the Reviewer
Customer Feedback

Installing Lagom and creating a Lagom project

Lagom heavily relies on the Scala build tool (also known as sbt) as the primary tool to install, create, build, configure, and run Lagom projects. While it is possible to use other build tools to do that, we will stick to sbt during this and the following recipes. In this recipe, we will look at how to create a Lagom project from scratch using the provided hello-world project. This project brings in two sample modules that use Kafka and Cassandra behind the scenes to manage the persistence layer.

Once we have our Hello-world sample project, we will extend it adding a new endpoint in one of the modules, and finally, we will use sbt to run all microservices. Afterward, we will use the curl command to access all our modules through REST calls.

Getting ready

To start with the hello world Lagom project, we need two have preinstalled two tools. Visit their respective websites to download and install them if they are not available in your system:

  • sbt 0...