What is useSuspenseQuery?

useSuspenseQuery is a new hook in React Query v5 that allows you to use the Suspense feature to render your components while your data is fetching. This can be useful for creating smoother and more responsive user interfaces.

How to use useSuspenseQuery

To use useSuspenseQuery, simply pass the same parameters to it as you would to the useQuery hook. The useSuspenseQuery hook will return a Promise that resolves to the query data.

import { useSuspenseQuery } from 'react-query';

const MyComponent = () => {
  const { data } = useSuspenseQuery('users', fetchUsers);

  return (
    <ul>
      {data.map((user) => (
        <li key={user.id}>{user.name}</li>
      ))}
    </ul>
  );
};

Because useSuspenseQuery returns a Promise, you can wrap your component in a <Suspense> component. This will tell React to render a fallback component while the data is fetching.

import { Suspense, useSuspenseQuery } from 'react-query';

const MyComponent = () => {
  const { data } = useSuspenseQuery('users', fetchUsers);

  return (
    <Suspense fallback={<div>Loading...</div>}>
      <ul>
        {data.map((user) => (
          <li key={user.id}>{user.name}</li>
        ))}
      </ul>
    </Suspense>
  );
};

Why is useSuspenseQuery useful?

useSuspenseQuery can be useful for creating smoother and more responsive user interfaces. For example, if you have a component that renders a list of users, you can use useSuspenseQuery to fetch the user data in the background while the component is rendering. This will allow your component to render immediately, even if the user data is not yet available.

Once the user data is fetched, React will re-render your component with the updated data. This will give your users a sense of responsiveness, even though the data is still fetching.

Best practices

Here are some best practices for using useSuspenseQuery:

• Use useSuspenseQuery to fetch data in the background while your components are rendering. This will create a smoother and more responsive user experience.
• Wrap your components in a <Suspense> component to tell React to render a fallback component while the data is fetching.
• Use the isLoading and isError properties to handle the loading and error states of your queries.
• Avoid using useSuspenseQuery for critical data that your application needs to render immediately. If the data for a critical query is not yet available, your application may not render correctly.

Conclusion

useSuspenseQuery is a powerful new hook in React Query v5 that can be used to create smoother and more responsive user interfaces. By following the best practices outlined above, you can use useSuspenseQuery to write efficient and user-friendly code.

Here are some additional tips for using useSuspenseQuery effectively:

• Use useSuspenseQuery to fetch data that is not essential for the initial render of your component. This will prevent your component from blocking the user interface while the data is fetching.
• Use useSuspenseQuery to fetch data that is likely to change frequently. This will allow your component to re-render quickly with the updated data.
• Use useSuspenseQuery to fetch data that is needed for a user interaction. This will allow your component to respond to the user interaction quickly, even though the data is still fetching.

By following these tips, you can use useSuspenseQuery to improve the performance and user experience of your React applications.

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