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Hands-On Reactive Programming in Spring 5

By : Dokuka, Lozynskyi

3.6 (7)

Buy this Book

Hands-On Reactive Programming in Spring 5

3.6 (7)

By: Dokuka, Lozynskyi

Buy this Book

Overview of this book

These days, businesses need a new type of system that can remain responsive at all times. This is achievable with reactive programming; however, the development of these kinds of systems is a complex task, requiring a deep understanding of the domain. In order to develop highly responsive systems, the developers of the Spring Framework came up with Project Reactor. Hands-On Reactive Programming in Spring 5 begins with the fundamentals of Spring Reactive programming. You’ll explore the endless possibilities of building efficient reactive systems with the Spring 5 Framework along with other tools such as WebFlux and Spring Boot. Further on, you’ll study reactive programming techniques and apply them to databases and cross-server communication. You will advance your skills in scaling up Spring Cloud Streams and run independent, high-performant reactive microservices. By the end of the book, you will be able to put your skills to use and get on board with the reactive revolution in Spring 5.1!

Preface

Who this book is for

What this book covers

To get the most out of this book

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Free Chapter

Why Reactive Spring?

Why reactive?

Reactivity use cases

Why Reactive Spring?

Summary

Reactive Programming in Spring - Basic Concepts

Early reactive solutions in Spring

RxJava as a reactive framework

Brief history of reactive libraries

Reactive landscape

Summary

Reactive Streams - the New Streams' Standard

Reactivity for everyone

The basics of the Reactive Streams spec

Advanced - async and parallel in Reactive Streams

Transfiguration of the Reactive Landscape

Summary

Project Reactor - the Foundation for Reactive Apps

A brief history of Project Reactor

Project Reactor essentials

Advanced Project Reactor

Summary

Going Reactive with Spring Boot 2

A fast start as the key to success

Reactive in Spring Boot 2.0

Summary

WebFlux Async Non-Blocking Communication

WebFlux as a central reactive server foundation

WebFlux versus Web MVC

Application of WebFlux

Summary

Reactive Database Access

Data handling patterns in the modern world

Synchronous model for data retrieval

Reactive data access with Spring Data

Transforming a synchronous repository into reactive

Reactive Spring Data in action

Summary

Scaling Up with Cloud Streams

Message brokers as the key to message-driven systems

Spring Cloud Streams as a bridge to Spring Ecosystem

Reactive programming in the cloud

RSocket for low-latency, reactive message passing

Summary

Testing the Reactive Application

Why are reactive streams hard to test?

Testing reactive streams with StepVerifier

Testing WebFlux

Summary

And, Finally, Release It!

The importance of DevOps-friendly apps

Monitoring the Reactive Spring application

Deploying to the cloud

Summary

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And, Finally, Release It!

Throughout this book, we have covered everything about Reactivity in Spring 5. This includes the concepts and patterns of reactive programming with Reactor 3, the new features of Spring Boot 2, Spring WebFlux, Reactive Spring Data, Spring Cloud Streams, and testing techniques for reactive programming. Now that we are familiar with these concepts, it is time to prepare our reactive application for production. The application should expose logs, metrics, traces, feature toggles, and other information that is useful for ensuring a successful operation. The application should also discover runtime dependencies such as database or message broker without violating security concerns. With all of this in mind, we can build an executable artifact ready for an on-premise or cloud deployment.

In this chapter, we will cover the following topics: