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)

Understanding Design Patterns

As we know, nowadays, we need to build Fault-Tolerant applications so that end users or customers don't feel frustrated using our application. We cannot write correct code to handle exceptions, errors, or faults and its a bit tough and not easy to do so.

It's not possible to develop a System or Application without it failing even once in its lifetime. New Systems may have more Faults (or Errors or Exceptions) and Legacy Systems may have less, but failures are common and it is expected in each and every System.

We should design and develop our Reactive Systems, Microservices, or Web Applications with failure in mind. As an Object is a first-class citizen in an Object-Oriented System, a Function is a first-class citizen in a Functional System, and a Fault-Handling Technique is a first-class citizen in a Reactive System.

In an Object-Oriented...