Book Image

Hands-On Reactive Programming in Spring 5

By : Oleh Dokuka, Igor Lozynskyi

Book Image

Hands-On Reactive Programming in Spring 5

By: Oleh Dokuka, Igor Lozynskyi

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

Free Chapter

Why Reactive Spring?

Why Reactive Spring?

Reactivity use cases

Why Reactive Spring?

Reactive Programming in Spring - Basic Concepts

Reactive Programming in Spring - Basic Concepts

Early reactive solutions in Spring

RxJava as a reactive framework

Brief history of reactive libraries

Reactive landscape

Reactive Streams - the New Streams' Standard

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

Project Reactor - the Foundation for Reactive Apps

Project Reactor - the Foundation for Reactive Apps

A brief history of Project Reactor

Project Reactor essentials

Advanced Project Reactor

Going Reactive with Spring Boot 2

Going Reactive with Spring Boot 2

A fast start as the key to success

Reactive in Spring Boot 2.0

WebFlux Async Non-Blocking Communication

WebFlux Async Non-Blocking Communication

WebFlux as a central reactive server foundation

WebFlux versus Web MVC

Application of WebFlux

Reactive Database Access

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

Scaling Up with Cloud Streams

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

Testing the Reactive Application

Testing the Reactive Application

Why are reactive streams hard to test?

Testing reactive streams with StepVerifier

Testing WebFlux

And, Finally, Release It!

And, Finally, Release It!

The importance of DevOps-friendly apps

Monitoring the Reactive Spring application

Deploying to the cloud

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The importance of DevOps-friendly apps

We may look at almost any software from three distinct angles. Each angle represents the needs of different target audiences that work with the system, namely the following:

Business users are interested in the business functions that the system provides
Developers want the system to be development-friendly
Operational teams want the system to DevOps-friendly

Now let's explore the operational aspect of a software system. From the standpoint of a DevOps team member, a software system is DevOps-friendly when it is not hard to support the system in production. This means that the system exposes proper health checks and metrics, and provides the ability to measure its performance and update different components smoothly. Furthermore, because nowadays microservices architecture is a default software development technique, it is mandatory...