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)

Principles of Scala FP

Scala supports all FP features. However, it is not easy to cover them in a single chapter. So we will discuss only the following few important FP features in this chapter:

  • Pure functions
  • Immutability (Immutable data)
  • Referential transparency
  • Functions are first-class citizens
  • Anonymous functions
  • Higher-Order Functions (HOF)
  • Currying
  • Tail recursion
  • Implicit
  • Typeclasses

FP Design Patterns

The following three are the most important and frequently used Functional Design Patterns.

  • Monoid
  • Monad
  • Functor (Applicative functor)
If you are new to Scala FP features and want to learn them in depth, I recommend that you refer to any Scala Basics books before picking this one.

Consider the following Scala FP features...