Learning RxJava
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The primary audience for this book is developers with at least a fundamental mastery of Java.
Some readers will likely be interested in RxJava to make programs more resilient, concurrent, and scalable. Others may be checking out reactive programming just to see what it is all about, and to judge whether it can solve any problems they may have.
What You Will LearnLearn the features of RxJava 2 that bring about many significant changes, including new reactive types such as Flowable, Single, Maybe, and CompletableUnderstand how reactive programming works and the mindset to "think reactively"Demystify the Observable and how it quickly expresses data and events as sequencesLearn the various Rx operators that transform, filter, and combine data and event sequencesLeverage multicasting to push data to multiple destinations, and cache and replay themDiscover how concurrency and parallelization work in RxJava, and how it makes these traditionally complex tasks trivial to implementApply RxJava and Retrolambda to the Android domain to create responsive Android apps with better user experiencesUse RxJava with the Kotlin language to express RxJava more idiomatically with extension functions, data classes, and other Kotlin featuresIn DetailRxJava is a library for composing asynchronous and event-based programs using Observable sequences for the JVM, allowing developers to build robust applications in less time.
Learning RxJava addresses all the fundamentals of reactive programming to help readers write reactive code, as well as teach them an effective approach to designing and implementing reactive libraries and applications.
Starting with a brief introduction to reactive programming concepts, there is an overview of Observables and Observers, the core components of RxJava, and how to combine different streams of data and events together. You will also learn simpler ways to achieve concurrency and remain highly performant, with no need for synchronization. Later on, we will leverage backpressure and other strategies to cope with rapidly-producing sources to prevent bottlenecks in your application. After covering custom operators, testing, and debugging, the book dives into hands-on examples using RxJava on Android as well as Kotlin.
Style and approachThis book will be different from other Rx books, taking an approach that comprehensively covers Rx concepts and practical applications.
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Thomas Nield is a business consultant for Southwest Airlines in Schedule Initiatives, and a maintainer for RxJavaFX and RxKotlin. Early in his career, he became fascinated with technology and its role in business analytics. After becoming proficient in Java, Kotlin, Python, SQL, and reactive programming, he became an open source contributor as well as an author/speaker at O'Reilly Media. He is passionate about sharing what he learns and enabling others with new skill sets. He enjoys making technical content relatable and relevant to those unfamiliar with or intimidated by it. Currently, Thomas is interested in data science, reactive programming, and the Kotlin language. You may find him speaking on these three subjects and how they can interconnect. He has also authored the book Getting Started with SQL, by O'Reilly Media.
