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


In this chapter, we learned how React Query allows us to perform mutations by using the useMutation hook. By now, you should be able to create, delete, or update your server state. To make these changes, you resort to the mutation function, which, like your query function, supports any client and allows you to use GraphQL or REST as long it returns a promise.

You learned about some things the useMutation hook returns, such as the mutate and mutateAsync functions. Similar to useQuery, useMutation also returns the mutation data and error variables and gives you access to some statuses you can use to craft a better user experience. For your convenience, useMutation also returns a reset function to clear your state and an isPaused variable in case your mutation enters a paused state.

For you to customize your developer experience, you learned about some commonly used options that allow you to customize your useMutation hook experience. We then leveraged four of these options...