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)

Scala tail-recursion

Recursion is a technique defined as using a function or method that calls itself again and again, until it solves the problem.

The recursion technique helps us solve simple problems very easily and even makes it possible to solve complex problems. It is easy to reason about and needs a lot less code, as compared to the iterative approach.

What kind of problems can we solve using the recursion technique? Any problem that is defined in terms of itself.

Types of recursions

We can implement recursion in different ways. However, we are considering only the following two types:

  • Linear recursion
  • Tail-recursion

Tail-recursion is one form of recursion technique. We can say a recursive call is tail-recursive,...