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React Query vs RTK Query: A Comparative Guide for Data Fetching in React

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Last Update: 24 Oct 2024

React Query vs RTK Query: A Comparative Guide for Data Fetching in React image

Introduction to Data Fetching in React

Data fetching is a common task in React apps. Developers can use two strong libraries: React Query and RTK Query. Both simplify data synchronization with external APIs, but they approach the task differently. This guide explores their core differences to help you choose the right one for your next project.

What is React Query?

React Query is a useful library. It helps you fetch, cache, sync, and update server-side data in your React apps. You can do this without the hassle of managing complex state on your own. It helps you focus on improving the user experience. It offers features like automatic caching, background syncing, and smoother loading.

Key Features of React Query:

  • Smart caching
  • Automatic refetching and data synchronization
  • Background data refreshes
  • Pagination and infinite scrolling support

What is RTK Query?

RTK Query is part of Redux Toolkit (RTK) and simplifies data fetching in Redux-powered apps. It removes the standard code usually required for handling Redux store slices, actions, and reducers. It also fits well into a Redux-based system.

Key Features of RTK Query:

  • Built into Redux Toolkit
  • Integrated caching and refetching
  • Optimistic updates
  • Minimal Redux boilerplate

Key Differences Between React Query and RTK Query

React Query and RTK Query are both good for managing server state. However, they have important differences in their design and use cases. Here’s a table summarizing the primary differences:

 

Feature React Query RTK Query
Library Size Smaller, purpose-built for data fetching Part of Redux Toolkit, slightly larger
Cache Management Automatic caching with time-based staleness Redux store-based caching
Data Fetching Logic Declarative hooks for fetching Integrated into Redux slices
Redux Dependency No Yes
DevTools Dedicated React Query DevTools Uses Redux DevTools
Pagination/Scrolling Built-in support Requires custom logic
Boilerplate  Minimal Simplified but with Redux concepts
 

When to Use React Query?

React Query is great for apps where you want efficient data syncing without managing global state. It works well in these situations:

1. Non-Redux applications: If you don’t use Redux, you can rely on React Query for data fetching.

2. GraphQL and REST APIs: React Query is compatible with both GraphQL and RESTful APIs.

3. Fine-grained cache management: Use it when you need control over caching, refetch intervals, and pagination. React Query is also useful for background data syncing. It helps reduce the extra code needed for state management.

 

import { useQuery } from 'react-query';

function fetchUser() {
  return fetch('/api/user').then(res => res.json());
}

function UserComponent() {
  const { data, error, isLoading } = useQuery('user', fetchUser);

  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>Error fetching data</div>;

  return <div>{data.name}</div>;
}

When to Use RTK Query?

RTK Query is the go-to solution when you are already using Redux to manage your app’s state. It integrates perfectly with Redux architecture and helps in maintaining a centralized state.

Use RTK Query if:

  • You’re already using Redux: It extends Redux's power without adding an extra library.
  • You need caching with centralized state: It keeps all server data within your Redux store.
  • Complex global state management: RTK Query’s optimistic updates and built-in middleware simplify global state management.

 

import { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query/react';

const api = createApi({
  reducerPath: 'api',
  baseQuery: fetchBaseQuery({ baseUrl: '/api' }),
  endpoints: (builder) => ({
    getUser: builder.query({
      query: (id) => `user/${id}`,
    }),
  }),
});

export const { useGetUserQuery } = api;

function UserComponent({ id }) {
  const { data, error, isLoading } = useGetUserQuery(id);

  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>Error fetching data</div>;

  return <div>{data.name}</div>;
}

Performance Considerations

Both libraries optimize network requests efficiently, but their approaches differ. React Query excels in applications where cache management and background updates are critical. RTK Query, on the other hand, shines in applications requiring centralized state management and global access to server data.

React Query Performance Features:

  • Background data fetching reduces perceived latency.
  • Minimal boilerplate for optimized fetching behavior.

RTK Query Performance Features:

  • Integrated caching reduces redundant network requests.
  • Supports optimistic updates and rollbacks.

Visualizing the Data Fetching Workflow

To better understand how each library works, here’s a simple visual representation of their workflows:

React Query Workflow:

  1. Query sent to API
  2. Response cached automatically
  3. Background refresh based on staleness

RTK Query Workflow:

  1. API call integrated with Redux slice
  2. Response stored in the Redux store
  3. State accessed globally through Redux
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Conclusion – Which Should You Choose?

Both React Query and RTK Query are powerful tools for handling server-side state in React applications. The choice between them often boils down to your existing architecture:

  • Choose React Query for simpler applications where you don’t need global state management.
  • Choose RTK Query for Redux-based applications where you benefit from centralized state and minimal boilerplate.

By understanding their strengths and weaknesses, you can select the right tool for your project’s needs.

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