Gain insights into Redux, an open-source library for managing app state. Learn about Redux store creation, middleware, state management, error handling, testing, and building robust applications.

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Redux

In this course, you will take a deep dive into Redux, an open-source JavaScript library for managing application state.

You will start by running through what Redux is, general concepts, and basic implementation. With the basics out of the way, you will begin working on building a recipe book application, adding more bells and whistles to it as the course progresses. You will learn to create a Redux store, how to work with middleware, state management, error handling, testing, and a whole lot more.

By the end, you will have advanced knowledge of one the most popular libraries among React and Angular developers. You will have the skills to create highly performant and consistent.

The Ultimate Guide to Redux

A problem with the nested state approach is retrieving data. If we would like to show all of a user’s favorite recipes, we need to scan all the books to find the relevant ones:

~~~~~~~
const getFavorites = (state) => {
  const recipes = state.books.map(
    book => book.recipes.filter(recipe => recipe.favorite)
  );

  // Strip all null values
  return recipes.filter(recipe => recipe);
};
~~~~~~~

When working with code such as the above, any changes to the structure of the state must be reflected not just in the reducers but in the UI as well. This approach breaks the separation of concerns and increases the amount of work required for state structure changes.  We discuss a better approach in the following lesson.

Learn issues in accessing data in multiple nested data entities.

Introduction to Redux

Basic Redux Implementation

Cloning a Redux Boilerplate

Complete Redux Project

Creating a Store

Decorating the Store

Actions and Action Creators

Redux Thunk

Redux-Actions Library

Reducers

Avoiding Mutations

Introduction to Middleware

Your First Middleware

Middleware

State Management

Keeping a Normalized State

Persistence State

Real-World State

Server Communication

Moving Code from Action Creators

Error Handling

Server Communication II

Transforming Data

Chaining Requests

Managing Side Effects

Messaging Patterns

WebSockets

WebSocket Authentication

Testing

Testing Action Creators

Async Action Creators

Testing Reducers

Testing Middleware

Testing Async Middleware

Integration Tests

Evolution Of Redux

Final Assessment

Access to Multiple Nested Data Entities