Hands-On Reactive Programming with Reactor : Build Reactive and Scalable Microservices Using the Reactor Framework

Discover how project Reactor enhances the reactive programming paradigm and allows you to build scalable asynchronous applications Key Features Use reactive APIs, Flux, and Mono to implement reactive extensions Create concurrent applications without the complexity of Java's concurrent API Understand techniques to implement event-driven and reactive applications Book Description Reactor is an implementation of the Java 9 Reactive Streams specification, an API for asynchronous data processing. This specification is based on a reactive programming paradigm, enabling developers to build enterprise-grade, robust applications with reduced complexity and in less time. Hands-On Reactive Programming with Reactor shows you how Reactor works, as well as how to use it to develop reactive applications in Java. The book begins with the fundamentals of Reactor and the role it plays in building effective applications. You will learn how to build fully non-blocking applications and will later be guided by the Publisher and Subscriber APIs. You will gain an understanding how to use two reactive composable APIs, Flux and Mono, which are used extensively to implement Reactive Extensions. All of these components are combined using various operations to build a complete solution. In addition to this, you will get to grips with the Flow API and understand backpressure in order to control overruns. You will also study the use of Spring WebFlux, an extension of the Reactor framework for building microservices. By the end of the book, you will have gained enough confidence to build reactive and scalable microservices. What you will learn Explore benefits of the Reactive paradigm and the Reactive Streams API Discover the impact of Flux and Mono implications in Reactor Expand and repeat data in stream processing Get to grips with various types of processors and choose the best one Understand how to map errors to make corrections easier Create robust tests using testing utilities offered by Reactor Find the best way to schedule the execution of code Who this book is for If you're looking to develop event- and data-driven applications easily with Reactor, this book is for you. Sound knowledge of Java fundamentals is necessary to understand the concepts covered in the book. Downloading the example code for this book You can download the example code files for all Packt books you have purchased from your account at http://www.PacktPub.com. If you purchased this book elsewher.. Discover how project Reactor enhances the reactive programming paradigm and allows you to build scalable asynchronous applications Key FeaturesUse reactive APIs, Flux, and Mono to implement reactive extensionsCreate concurrent applications without the complexity of Java's concurrent APIUnderstand techniques to implement event-driven and reactive applicationsBook DescriptionReactor is an implementation of the Java 9 Reactive Streams specification, an API for asynchronous data processing. This specification is based on a reactive programming paradigm, enabling developers to build enterprise-grade, robust applications with reduced complexity and in less time. Hands-On Reactive Programming with Reactor shows you how Reactor works, as well as how to use it to develop reactive applications in Java. The book begins with the fundamentals of Reactor and the role it plays in building effective applications. You will learn how to build fully non-blocking applications and will later be guided by the Publisher and Subscriber APIs. You will gain an understanding how to use two reactive composable APIs, Flux and Mono, which are used extensively to implement Reactive Extensions. All of these components are combined using various operations to build a complete solution. In addition to this, you will get to grips with the Flow API and understand backpressure in order to control overruns. You will also study the use of Spring WebFlux, an extension of the Reactor framework for building microservices. By the end of the book, you will have gained enough confidence to build reactive and scalable microservices. What you will learnExplore benefits of the Reactive paradigm and the Reactive Streams APIDiscover the impact of Flux and Mono implications in ReactorExpand and repeat data in stream processingGet to grips with various types of processors and choose the best oneUnderstand how to map errors to make corrections easierCreate robust tests using testing utilities offered by ReactorFind the best way to schedule the execution of codeWho this book is forIf youre looking to develop event- and data-driven applications easily with Reactor, this book is for you. Sound knowledge of Java fundamentals is necessary to understand the concepts covered in the book. Table of ContentsGetting started with Reactive StreamsThe Publisher and Subscriber APIs in a Reactor Data and Stream processingThe fundamentals of ProcessorsSpringWebFlux for MicroservicesDynamic renderingFlow Control and Back PressureHandling ErrorsExecution ModelTesting and Debugging BDiscover how project Reactor enhances the reactive programming paradigm and allows you to build scalable asynchronous applications/b h4Key Features/h4 ulliUse reactive APIs, Flux, and Mono to implement reactive extensions /li liCreate concurrent applications without the complexity of Java's concurrent API /li liUnderstand techniques to implement event-driven and reactive applications /li /ul h4Book Description/h4 Reactor is an implementation of the Java 9 Reactive Streams specification, an API for asynchronous data processing. This specification is based on a reactive programming paradigm, enabling developers to build enterprise-grade, robust applications with reduced complexity and in less time. Hands-On Reactive Programming with Reactor shows you how Reactor works, as well as how to use it to develop reactive applications in Java. The book begins with the fundamentals of Reactor and the role it plays in building effective applications. You will learn how to build fully non-blocking applications and will later be guided by the Publisher and Subscriber APIs. You will gain an understanding how to use two reactive composable APIs, Flux and Mono, which are used extensively to implement Reactive Extensions. All of these components are combined using various operations to build a complete solution. In addition to this, you will get to grips with the Flow API and understand backpressure in order to control overruns. You will also study the use of Spring WebFlux, an extension of the Reactor framework for building microservices. By the end of the book, you will have gained enough confidence to build reactive and scalable microservices. h4What you will learn/h4 ulliExplore benefits of the Reactive paradigm and the Reactive Streams API /li liDiscover the impact of Flux and Mono implications in Reactor /li liExpand and repeat data in stream processing /li liGet to grips with various types of processors and choose the best one /li liUnderstand how to map errors to make corrections easier /li liCreate robust tests using testing utilities offered by Reactor /li liFind the best way to schedule the execution of code /li /ul h4Who this book is for/h4 If you're looking to develop event- and data-driven applications easily with Reactor, this book is for you. Sound knowledge of Java fundamentals is necessary to understand the concepts covered in the book Hands-On Reactive Programming with Reactor presents a variety of examples which show how to use the Reactor framework to handle asynchronous code. In reactive programming, Reactor is a foundation for all its asynchronous applications on the JVM.