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 global states

In this section, we will learn what a global state is again and when we should use it.

What is a global state?

In this book, a global state simply means that it's not a local state. If a state conceptually belongs to a single component and is encapsulated by the component, it is a local state. Hence, if a state doesn't belong to a single component and can be used by multiple components, it is a global state.

There could be an application-wide local state that all components depend on. In this case, the application-wide local state can be seen as a global state. In this sense, we can't clearly divide local states and global states. In most cases, if you consider where a state conceptually belongs, you can work out whether it's local or global.

There are two aspects when people talk about a global state, as outlined here:

  • One is a singleton, meaning that in some contexts, the state has one value.
  • The other is a shared state...