Book Image

Micro State Management with React Hooks

By : Daishi Kato
Book Image

Micro State Management with React Hooks

By: Daishi Kato

Overview of this book

State management is one of the most complex concepts in React. Traditionally, developers have used monolithic state management solutions. Thanks to React Hooks, micro state management is something tuned for moving your application from a monolith to a microservice. This book provides a hands-on approach to the implementation of micro state management that will have you up and running and productive in no time. You’ll learn basic patterns for state management in React and understand how to overcome the challenges encountered when you need to make the state global. Later chapters will show you how slicing a state into pieces is the way to overcome limitations. Using hooks, you'll see how you can easily reuse logic and have several solutions for specific domains, such as form state and server cache state. Finally, you'll explore how to use libraries such as Zustand, Jotai, and Valtio to organize state and manage development efficiently. By the end of this React book, you'll have learned how to choose the right global state management solution for your app requirement.
Table of Contents (16 chapters)
Part 1: React Hooks and Micro State Management
Part 2: Basic Approaches to the Global State
Part 3: Library Implementations and Their Uses

Using React hooks to optimize re-renders

For global states, optimizing re-renders is important because not all components use all the properties in a global state. Let's learn how Zustand addresses this.

To use store in React, we need a custom hook. Zustand's create function creates a store that can be used as a hook.

To follow the naming convention of React hooks, we have named the created value useStore instead of store:

// store.ts
import create from "zustand";
export const useStore = create(() => ({
  count: 0,
  text: "hello",

Next, we must use the created useStore hook in React components. The useStore hook, if it's invoked, returns the entire state object, including all its properties. For example, let's define a component that shows the count value in store:

import { useStore } from "./store.ts";
const Component = () => {
  const { count, text } = useStore();