Which is Better Data Fetching Libraries for React?
swr vs react-query vs apollo-client vs redux-query
1 Year
swrreact-queryapollo-clientredux-querySimilar Packages:
What's Data Fetching Libraries for React?

Data fetching libraries are essential tools in modern web development, especially for React applications. They simplify the process of fetching, caching, and synchronizing data from APIs, allowing developers to focus on building user interfaces rather than managing data state. These libraries provide various features such as automatic caching, background updates, and built-in support for handling loading and error states, which enhance the overall user experience and application performance. By leveraging these libraries, developers can create more responsive and efficient applications with less boilerplate code.

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swr2,425,58930,581620 kB1499 months agoMIT
react-query1,412,32442,5922.26 MB892 years agoMIT
apollo-client427,70119,382-5125 years agoMIT
redux-query14,1601,101197 kB14a year agoMIT
Feature Comparison: swr vs react-query vs apollo-client vs redux-query

Data Fetching

  • swr: SWR (stale-while-revalidate) is a lightweight library that focuses on data fetching and caching. It provides a simple API for fetching data, automatically revalidating it in the background, and caching responses to improve performance. SWR is particularly effective for applications that require frequent data updates.
  • react-query: React Query simplifies data fetching for both REST and GraphQL APIs. It abstracts the complexities of fetching data, allowing developers to focus on the UI. It automatically handles caching, background updates, and stale data management, making it easy to keep the UI in sync with the server.
  • apollo-client: Apollo Client is specifically designed for GraphQL APIs, providing a powerful and flexible way to fetch and manage data. It supports queries, mutations, and subscriptions, enabling real-time data updates and seamless integration with the GraphQL ecosystem.
  • redux-query: Redux Query integrates data fetching into the Redux state management paradigm. It allows developers to define queries as part of their Redux actions, providing a centralized way to manage data fetching and state updates, which can be beneficial for larger applications with complex state requirements.

Caching Mechanism

  • swr: SWR implements a simple caching strategy that stores data in memory. It automatically revalidates cached data in the background, ensuring that the UI is always displaying the most up-to-date information while minimizing network requests.
  • react-query: React Query offers a powerful caching system that automatically caches fetched data and manages stale data. It allows developers to configure cache time and stale time, ensuring that data is fresh while minimizing unnecessary requests to the server.
  • apollo-client: Apollo Client features an advanced caching mechanism that stores query results in a normalized cache. This allows for efficient data retrieval and minimizes the number of network requests, as previously fetched data can be reused seamlessly across components.
  • redux-query: Redux Query leverages Redux's store as its caching mechanism, allowing for a centralized state management approach. This means that all fetched data is stored in the Redux state, making it accessible throughout the application, but it may require more boilerplate code to manage state updates.

Error Handling

  • swr: SWR provides a straightforward way to handle errors during data fetching. It allows developers to check for errors in the response and implement custom error handling logic, making it easy to display error messages in the UI.
  • react-query: React Query simplifies error handling by providing hooks that return error states alongside data and loading states. This makes it easy to implement user-friendly error messages and retry logic without complex boilerplate code.
  • apollo-client: Apollo Client provides built-in error handling for GraphQL operations, allowing developers to easily manage and display errors that occur during data fetching. It supports both network errors and GraphQL errors, enabling comprehensive error management.
  • redux-query: Redux Query relies on Redux's action and state management for error handling. Errors can be captured in the Redux state, allowing for a centralized approach to manage error states, but it may require more setup compared to other libraries.

Learning Curve

  • swr: SWR is designed to be simple and easy to use, with a minimal API that is straightforward for developers to grasp. Its focus on caching and revalidation makes it an excellent choice for those looking for a quick and efficient data fetching solution.
  • react-query: React Query is relatively easy to learn, particularly for developers familiar with React hooks. Its API is intuitive, and it abstracts much of the complexity of data fetching, making it accessible for developers of all skill levels.
  • apollo-client: Apollo Client has a moderate learning curve, especially for developers new to GraphQL. Understanding GraphQL concepts such as queries, mutations, and subscriptions is essential, but the library provides comprehensive documentation and examples to ease the learning process.
  • redux-query: Redux Query has a steeper learning curve due to its integration with Redux. Developers need to be familiar with Redux concepts such as actions, reducers, and middleware to effectively use this library, which can be challenging for beginners.

Community and Ecosystem

  • swr: SWR has a rapidly growing community, supported by Vercel, the creators of Next.js. Its popularity is increasing, and it has a solid documentation base, making it easier for developers to find support and examples.
  • react-query: React Query has gained popularity rapidly and has a growing community. It is well-documented, and its simplicity has led to a wealth of tutorials and resources, making it easy for developers to get started and find help.
  • apollo-client: Apollo Client has a large and active community, with extensive documentation, tutorials, and resources available. It is widely adopted in the industry, making it easy to find support and examples for common use cases.
  • redux-query: Redux Query has a smaller community compared to the others, as it is less commonly used in new projects. However, it benefits from the existing Redux ecosystem, allowing developers to leverage Redux's tools and resources for state management.
How to Choose: swr vs react-query vs apollo-client vs redux-query
  • swr: Use SWR if you prefer a lightweight solution that emphasizes simplicity and performance. It is particularly useful for applications that require frequent data fetching and real-time updates, with a focus on caching and revalidation.
  • react-query: Opt for React Query if you require a simple yet effective solution for RESTful APIs or GraphQL. It excels in data synchronization, caching, and background fetching, making it ideal for applications with dynamic data needs.
  • apollo-client: Choose Apollo Client if you are working with GraphQL APIs and need a powerful caching mechanism. It integrates seamlessly with React and offers advanced features like optimistic UI updates and local state management.
  • redux-query: Select Redux Query if your application already uses Redux for state management and you want to integrate data fetching into your Redux flow. It allows for a more centralized state management approach, leveraging Redux's capabilities.
README for swr

SWR


Introduction

SWR is a React Hooks library for data fetching.

The name “SWR” is derived from stale-while-revalidate, a cache invalidation strategy popularized by HTTP RFC 5861. SWR first returns the data from cache (stale), then sends the request (revalidate), and finally comes with the up-to-date data again.

With just one hook, you can significantly simplify the data fetching logic in your project. And it also covered in all aspects of speed, correctness, and stability to help you build better experiences:

  • Fast, lightweight and reusable data fetching
  • Transport and protocol agnostic
  • Built-in cache and request deduplication
  • Real-time experience
  • Revalidation on focus
  • Revalidation on network recovery
  • Polling
  • Pagination and scroll position recovery
  • SSR and SSG
  • Local mutation (Optimistic UI)
  • Built-in smart error retry
  • TypeScript
  • React Suspense
  • React Native

...and a lot more.

With SWR, components will get a stream of data updates constantly and automatically. Thus, the UI will be always fast and reactive.


View full documentation and examples on swr.vercel.app.


Quick Start

import useSWR from 'swr'

function Profile() {
  const { data, error, isLoading } = useSWR('/api/user', fetcher)

  if (error) return <div>failed to load</div>
  if (isLoading) return <div>loading...</div>
  return <div>hello {data.name}!</div>
}

In this example, the React Hook useSWR accepts a key and a fetcher function. The key is a unique identifier of the request, normally the URL of the API. And the fetcher accepts key as its parameter and returns the data asynchronously.

useSWR also returns 3 values: data, isLoading and error. When the request (fetcher) is not yet finished, data will be undefined and isLoading will be true. When we get a response, it sets data and error based on the result of fetcher, isLoading to false and rerenders the component.

Note that fetcher can be any asynchronous function, you can use your favourite data-fetching library to handle that part.


View full documentation and examples on swr.vercel.app.


Authors

This library is created by the team behind Next.js, with contributions from our community:

Contributors

Thanks to Ryan Chen for providing the awesome swr npm package name!


License

The MIT License.