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Micro State Management with React Hooks

Micro State Management with React Hooks

By : Daishi Kato
4.9 (10)
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Micro State Management with React Hooks

Micro State Management with React Hooks

4.9 (10)
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)
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1
Part 1: React Hooks and Micro State Management
3
Part 2: Basic Approaches to the Global State
8
Part 3: Library Implementations and Their Uses

Using proxies to optimize re-renders

Valtio uses proxies to optimize re-renders, as well as detecting mutations. This is the pattern of optimizing re-renders we learned about in the Detecting property access section of Chapter 6, Introducing Global State Libraries.

Let's learn about the usage and behavior of Valtio hooks with a counter app. The hook is called useSnapshot. The implementation of useSnapshot is based on the snapshot function and another proxy to wrap it. This snapshot proxy has a different purpose from the proxy used in the proxy function. The snapshot proxy is used to detect the property access of a snapshot object. We will see how render optimization works, thanks to the snapshot proxy.

We start with importing functions from Valtio to create a counter app:

import { proxy, useSnapshot } from "valtio";

proxy and useSnapshot are two main functions provided by Valtio and they cover most use cases.

We then create a state object with proxy. In...

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