Book Image

Architecting Angular Applications with Redux, RxJS, and NgRx

Book Image

Architecting Angular Applications with Redux, RxJS, and NgRx

Overview of this book

Managing the state of large-scale web applications is a highly challenging task with the need to align different components, backends, and web workers harmoniously. When it comes to Angular, you can use NgRx, which combines the simplicity of Redux with the reactive programming power of RxJS to build your application architecture, making your code elegant and easy to reason about, debug, and test. In this book, we start by looking at the different ways of architecting Angular applications and some of the patterns that are involved in it. This will be followed by a discussion on one-way data flow, the Flux pattern, and the origin of Redux. The book introduces you to declarative programming or, more precisely, functional programming and talks about its advantages. We then move on to the reactive programming paradigm. Reactive programming is a concept heavily used in Angular and is at the core of NgRx. Later, we look at RxJS, as a library and master it. We thoroughly describe how Redux works and how to implement it from scratch. The two last chapters of the book cover everything NgRx has to offer in terms of core functionality and supporting libraries, including how to build a micro implementation of NgRx. This book will empower you to not only use Redux and NgRx to the fullest, but also feel confident in building your own version, should you need it.
Table of Contents (12 chapters)

Manipulating Streams and Their Values

Let's start with a recap of the previous chapter and remind ourselves how far we have come already in understanding RxJS. We learned about concepts such as Observable, Observer, and Producer, and how they interplay. Furthermore, we got insight into the subscription process so we could actually receive our coveted values. We also looked at how unsubscribing from streams works and in which cases it is necessary to define such a behavior. Lastly, we got our hands dirty by learning how to build a core implementation of RxJS and thereby got to see all those concepts in action. Armed with all that knowledge, we should feel quite confident about the foundation of RxJS, but as was mentioned in the last chapter, we need help from operators to actually do something meaningful with our streams.

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