Book Image

Architecting Angular Applications with Redux, RxJS, and NgRx

By : Christoffer Noring
Book Image

Architecting Angular Applications with Redux, RxJS, and NgRx

By: Christoffer Noring

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)


The demo code for this section can be found in the code repository for this book under Chapter10/Entity.

The entity library is here to help us manage collections and basically, write less and do more. This means that so far we have been writing a lot of code when creating reducers and selectors that we simply won't need to do when we leverage the full power of the entity library.

Setting it up

We start by downloading the entity library. To do this, we need to run the following command:

npm install @ngrx/entity

We then need to perform the following steps:

  1. Create a model.
  2. Create an entity state based on the model.
  3. Create an entity adapter.
  4. Create the initial state.
  5. Create the reducer and set up the state in...