What are the best practices for using SWR in Next.js?

What are the best practices for using SWR in Next.js?

When using SWR in Next.js, it's important to keep your data fetching efficient. Here are some best practices:

1. Use the revalidateOnFocus option to refresh data when the window regains focus.
2. Implement caching strategies to minimize unnecessary requests.
3. Use the fallbackData option to provide initial data for better user experience.
4. Handle errors gracefully to improve user feedback.

Can you explain how to implement caching with SWR?

Certainly! SWR automatically caches data based on the key you provide. You can customize caching behavior by using the cache option in the SWR configuration. For example, you can set a custom cache provider or define a cache expiration time to ensure data is fresh.

What about error handling in SWR?

Error handling in SWR can be done using the onError callback. You can display error messages to users or retry fetching data based on specific conditions. Additionally, you can use the isError property to conditionally render UI elements based on the error state.

Are there any performance tips for using SWR?

Yes! To enhance performance, consider batching requests, using pagination for large datasets, and leveraging the dedupingInterval option to reduce duplicate requests within a specified timeframe.