Book Image

Scala Reactive Programming

By : Rambabu Posa
Book Image

Scala Reactive Programming

By: Rambabu Posa

Overview of this book

Reactive programming is a scalable, fast way to build applications, and one that helps us write code that is concise, clear, and readable. It can be used for many purposes such as GUIs, robotics, music, and others, and is central to many concurrent systems. This book will be your guide to getting started with Reactive programming in Scala. You will begin with the fundamental concepts of Reactive programming and gradually move on to working with asynchronous data streams. You will then start building an application using Akka Actors and extend it using the Play framework. You will also learn about reactive stream specifications, event sourcing techniques, and different methods to integrate Akka Streams into the Play Framework. This book will also take you one step forward by showing you the advantages of the Lagom framework while working with reactive microservices. You will also learn to scale applications using multi-node clusters and test, secure, and deploy your microservices to the cloud. By the end of the book, you will have gained the knowledge to build robust and distributed systems with Scala and Akka.
Table of Contents (16 chapters)

Extending Applications with Play

In this chapter, we will discuss what Play Framework is and how to develop Reactive Web Applications using Scala, Akka, and Play Framework.

In this book, we will use the latest version of Play Framework, 2.6.11, which was released in July 2017. It requires a minimum of JDK 1.8, SBT 0.13.15, and Scala 2.11.x or 2.12.x.

Play is a very flexible framework such that it does not force developers to use a predefined flow/components/approach. We can use the best suitable approach to develop our applications.

Its official website is and you can find its source code on GitHub at

In this chapter, we will learn the following concepts:

  • What is Play Framework and what are its features, benefits, and building blocks?
  • Play Architecture and its Project structure
  • Play Framework simple...