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)

Building Reactive Applications with Akka

In this chapter, we will discuss how to develop Reactive Applications using the Akka Toolkit. Unlike the Shared-State Concurrency model, which does not support true Parallelism, Akka's Actor-based Concurrency model supports true Parallelism. Akka is an open source library available on Apache License Version 2.0.

We can develop applications using Akka to utilize today's multicore CPUs efficiently to improve application performance. In the old versions, Scala had the Actors library; Lightbend has removed it from Scala and moved it to the Akka Toolkit. Now the scala.actors library is no longer useful, and it is deprecated.

Akka is an Event-Driven middleware framework for building high-performance, highly Scalable, highly available, and Reliable distributed applications in Java and Scala.

In this book, we will use the latest version...