Book Image

Reactive Programming With Java 9

By : Tejaswini Mandar Jog
Book Image

Reactive Programming With Java 9

By: Tejaswini Mandar Jog

Overview of this book

<p>Reactive programming is an asynchronous programming model that helps you tackle the essential complexity that comes with writing such applications.</p> <p>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.</p> <p>This book begins by explaining what Reactive programming is, the Reactive manifesto, and the Reactive Streams specifi cation. 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 specifi cation. From this point on, it focuses on RxJava 2.0, covering topics such as creating, transforming,fi ltering, combining, and testing Observables. It discusses how to use Java’s popular framework, Spring, to build event-driven, Reactive applications. You will also learn how to implement resiliency patterns using Hystrix. By the end, you will be fully equipped with the tools and techniques needed to implement robust, event-driven, Reactive applications.</p>
Table of Contents (12 chapters)
Free Chapter
1
Introduction to Reactive Programming

Summary

In this chapter, we started the discussion with Spring Data project, the modules supported by it, and its features such as easy to integrate multiple data stores, using the default CRUD functionality, and the support for auditing. We discussed in depth about the interfaces such as Repository, CrudRepository, and ReactiveRepository to create custom Spring Data repositories. While creating these repositories, we may need to add the methods for querying the repositories. As the query builder builds the queries from the method names, we also discussed naming the methods to obtain the result from the repository. We created an interface, and now, to implement the framework, we asked the framework to create proxies of the repository interfaces. The Spring Framework supports both XML-based as well as annotation-based proxy creation annotations such as @EnableJpaRepositories The...