Reactive Programming With Java 9

Key Features

• Learn about Java 9’s Flow API, Reactive programming along with Kafka and Mockito, and how these aspects are utilized by RxJava
• Build fast and concurrent applications with ease, without the complexity of Java’s concurrent API and shared states, with the help of Spring
• Explore a wide variety of code examples to easily get used to all the features and tools provided by RxJava and Akka

Book Description

Technology currently plays a major role in the success of a business, and it has become ever more important for applications that enable or support the business to become responsive, resilient, and elastic. Reactive programming is a programming model that helps you tackle the essential complexity that comes with writing such applications.

Using Reactive programming to start building applications is not immediately intuitive to a developer who has been writing programs in the imperative paradigm. To tackle the essential complexity, Reactive programming uses declarative and functional paradigms to build programs. This book sets out to make the paradigm shift easy.

This book begins by explaining what Reactive programming is, the Reactive manifesto, and the Reactive stream specification. It uses Java 9 to introduce the declarative and functional paradigm, which is necessary to write programs in the Reactive style. It explains Java 9’s Flow API, an adoption of the Reactive streams specification. From this point on, it focuses on RxJava 2.0, covering topics such as creating, transforming, filtering, combining, and testing Observables. It discusses how to use Java’s popular framework, Spring, to build event-driven, Reactive apps. You will also learn how to deploy your applications on Docker. By the end of the book, you will be fully equipped with the tools and techniques to implement robust, event-driven, Reactive applications

What you will learn

• Understand the Reactive manifesto
• Grasp Reactive streams types introduced in Java 9 in the form of the Flow API
• Use RxJava, a Reactive stream implementation, to build asynchronous applications
• Build responsiveness and resilience into applications using RxJava operators
• Implement Reactive web application using Spring Framework 5 and RxJava applications

Table of Contents

Chapter 1. Introduction To Reactive Programming
Chapter 2. Programming Paradigm Shift
Chapter 3. Reactive Streams
Chapter 4. Reactive Types In Rxjava
Chapter 5. Operators
Chapter 6. Building Responsiveness
Chapter 7. Building Resiliency
Chapter 8. Testing
Chapter 9. Spring Reactive Web
Chapter 10. Implementing Resiliency Patterns Using Hystrix
Chapter 11. Reactive Data Access