Book Image

Spring 5.0 Cookbook

By : Sherwin John C. Tragura
Book Image

Spring 5.0 Cookbook

By: Sherwin John C. Tragura

Overview of this book

The Spring framework has been the go-to framework for Java developers for quite some time. It enhances modularity, provides more readable code, and enables the developer to focus on developing the application while the underlying framework takes care of transaction APIs, remote APIs, JMX APIs, and JMS APIs. The upcoming version of the Spring Framework has a lot to offer, above and beyond the platform upgrade to Java 9, and this book will show you all you need to know to overcome common to advanced problems you might face. Each recipe will showcase some old and new issues and solutions, right from configuring Spring 5.0 container to testing its components. Most importantly, the book will highlight concurrent processes, asynchronous MVC and reactive programming using Reactor Core APIs. Aside from the core components, this book will also include integration of third-party technologies that are mostly needed in building enterprise applications. By the end of the book, the reader will not only be well versed with the essential concepts of Spring, but will also have mastered its latest features in a solution-oriented manner.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Creating concurrent and parallel emissions


Besides multithreading, it is possible to achieve concurrency and parallelism with Reactor Core. This recipe is still about Scheduler but in parallel mode. The clear concept of parallelism is all about having these n operations distributed to m workers that are executed independently of each other. This recipe will utilize Schedulers to enable parallelism in Reactive Streams.

Getting ready

Open project ch07 again and add the following service that shows different ways of how to implement concurrent and parallel Streams using Schedulers and some Reactive Core 3.x operators.

How to do it...

To implement concurrent and parallel Stream emissions, perform the following steps:

  1. Add the following service class in our org.packt.reactive.code.service package. This class contains method templates that will detail parallelism and concurrency based on Reactive Streams specification:
public interface EmployeeParallelStreamservice { 
    
   public Flux<String&gt...