Book Image

State Management with React Query

By : Daniel Afonso
Book Image

State Management with React Query

By: Daniel Afonso

Overview of this book

State management, a crucial aspect of the React ecosystem, has gained significant attention in recent times. While React offers various libraries and tools to handle state, each with different approaches and perspectives, one thing is clear: state management solutions for handling client state are not optimized for dealing with server state. React Query was created to address this issue of managing your server state, and this guide will equip you with the knowledge and skills needed to effectively use React Query for state management. Starting with a brief history of state management in the React ecosystem, you’ll find out what prompted the split from a global state to client and server state and thus understand the need for React Query. As you progress through the chapters, you'll see how React Query enables you to perform server state tasks such as fetching, caching, updating, and synchronizing your data with the server. But that’s not all; once you’ve mastered React Query, you’ll be able to apply this knowledge to handle server state with server-side rendering frameworks as well. You’ll also work with patterns to test your code by leveraging the testing library and Mock Service Worker. By the end of this book, you'll have gained a new perspective of state and be able to leverage React Query to overcome the obstacles associated with server state.
Table of Contents (14 chapters)
Part 1: Understanding State and Getting to Know React Query
Part 2: Managing Server State with React Query

Fetching Data with React Query

React Query allows you to fetch, cache, and handle your server state by leveraging one of its custom hooks called useQuery. For your data to be cached, React Query has a concept called a query key. In combination with the query keys and a couple of strict defaults, React Query takes your server state management to the next level.

In this chapter, you will be introduced to the useQuery hook and understand how React Query allows you to fetch and cache your data. During this process, you will get to know all the defaults that are used in all of your queries. You will also be introduced to some options you can use to make your useQuery experience even better.

After becoming familiar with useQuery, you can start using it to refetch your queries in certain scenarios. You will also be able to leverage some extra properties of useQuery to fetch queries that depend on each other.

At the end of this chapter, we’ll review a code file to review what...