Architecting Angular Applications with Redux, RxJS, and NgRx

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Architecting Angular Applications with Redux, RxJS, and NgRx

3.7 (10)

Buy this Book

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.

Preface

Who this book is for

What this book covers

To get the most out of this book

Get in touch

Free Chapter

Quick Look Back at Data Services for Simple Apps

Model-View-Controller – the pattern we all know

An MVC flow in Angular

Using ES2015 modules

Dependency Injection

Fetching and persisting data with HTTP – introducing services with Observables

Summary

1.21 Gigawatt – Flux Pattern Explained

Core concepts overview

A uniform data flow

Demoing a uniform data flow

Adding more actions to our flow

Adding AJAX calls

An even bigger solution

Summary

Asynchronous Programming

The callback pattern

Problems with structuring async code – callback hell

Promises

Asynchronous libraries

Async/await

Summary

Functional Reactive Programming

Functional programming versus imperative programming

Recursion

Asynchronous data streams

Comparing lists to async streams – preparing for RxJS

Summary

RxJS Basics

Observer pattern

RxJS core concepts

Creating Observables

Cleanup

Creating a core implementation of RxJS

Summary

Manipulating Streams and Their Values

Starting out

Stream in a stream

AJAX

A deeper look

Thinking in streams

Summary

RxJS Advanced

Hot, cold, and warm Observables

Subjects

Error handling

Marble testing

Pipeable operators

Summary

Redux

Principles

Core concepts

Data flow

Dealing with asynchronous calls

Best practices

Summary

NgRx – Reduxing that Angular App

NgRx overview

@ngrx/store – state management

Best practices

Leveraging types and feature modules

Component architecture

@ngrx/store-devtools – debugging

@ngrx/effects – working with side effects

Summary

NgRx – In Depth

@ngrx/entity

@ngrx/router-store

Understanding NgRx – building our own micro implementation

@ngrx/schematics

Summary

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@ngrx/schematics

Schematics is dependent on all of the libraries you can possibly use with NgRx; it's therefore a good idea to start out by installing these libraries before we do anything else. Just type the following:

npm install @ngrx/effects --save
npm install @ngrx/entity --save
npm install @ngrx/store --save
npm install @ngrx/store-devtools

Schematics itself is a library that Angular-CLI uses to generate different constructs needed for Angular development, such as components services, filters, and much more. @ngrx/schematics provides blueprints to schematics so you can get help generating constructs that you need when working with NgRx, in other words it makes development a lot faster. You can get help with generating the following things: