#I'm not sure if the page got re-fetched, how do I check

1 messages · Page 1 of 1 (latest)

tranquil sigilBOT
#

Hi @opal zodiac. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

I'm sorry, but it seems like your question is incomplete. Could you please provide more details or context? I'm here to help with any questions related to Next.js.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@opal zodiac kapa.ai is still learning and improving, please let us how it did by reacting below

opal zodiac
#

I'm not sure if the page got re-fetched, how do I check @tranquil sigil

tranquil sigilBOT
#

Let me check the knowledge base for you. One moment! :books:

#

You can check if a page has been re-fetched by inspecting the x-nextjs-cache response header. This header indicates the cache status of a page leveraging Incremental Static Regeneration (ISR). The possible values are:

  • MISS - the path is not in the cache (occurs at most once, on the first visit)
  • STALE - the path is in the cache but exceeded the revalidate time so it will be updated in the background
  • HIT - the path is in the cache and has not exceeded the revalidate time

You can inspect this header using the browser's developer tools or any other tool that allows you to inspect HTTP headers.

To test your on-demand ISR configuration during development, you can create a production build and start the production server using the following commands:

$ next build
$ next start

Then, you can confirm that static pages have successfully revalidated.

For more information, you can refer to the Next.js documentation (https://nextjs.org/docs/pages/api-reference/functions/get-static-props#getstaticprops-return-values-revalidate).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@opal zodiac kapa.ai is still learning and improving, please let us how it did by reacting below

opal zodiac
#

Why my getStaticProps page get refetched? I thought once I load the site it wouldn't need to refetch? @tranquil sigil

tranquil sigilBOT
#

Let me check the knowledge base for you. One moment! :books:

#

The behavior you're observing is likely due to the revalidate property in your getStaticProps function. The revalidate property is the amount in seconds after which a page re-generation can occur. If you set a revalidate time, Next.js will attempt to re-generate the page when a request comes in, but at most once every specified number of seconds.

Here's an example of how it's used:

export async function getStaticProps() {
 const res = await fetch('<https://.../posts'>)
 const posts = await res.json()
 
 return {
 props: {
 posts,
 },
 // Next.js will attempt to re-generate the page:
 // - When a request comes in
 // - At most once every 10 seconds
 revalidate: 10, // In seconds
 }
}

In this example, the page will be re-generated at most once every 10 seconds when a request comes in. This means that if you load the site and then reload it after 10 seconds, getStaticProps will be invoked again to regenerate the page.

If you don't want the page to be re-fetched, you can omit the revalidate property. However, keep in mind that without revalidate, the page will only be generated at build time and won't be updated until the next build.

For more information, you can refer to the Next.js documentation (https://nextjs.org/docs/pages/api-reference/functions/get-static-props#getstaticprops-return-values-revalidate).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@opal zodiac kapa.ai is still learning and improving, please let us how it did by reacting below

opal zodiac
#

But I don't have revalidate prop? @tranquil sigil

tranquil sigilBOT
#

Let me check the knowledge base for you. One moment! :books:

#

If you don't have a revalidate prop in your getStaticProps function and your page is still being re-fetched, it might be due to one of the following reasons:

  1. On-Demand Incremental Static Regeneration: Starting with Next.js v12.2.0, Next.js supports On-Demand Incremental Static Regeneration to manually purge the Next.js cache for a specific page. This can cause a page to be re-fetched even if revalidate is not specified. You can trigger on-demand revalidation by calling revalidate() on the exact path that you want revalidated.

  2. Error Handling: If there is an error inside getStaticProps when handling background regeneration, or you manually throw an error, the last successfully generated page will continue to show. On the next subsequent request, Next.js will retry calling getStaticProps.

  3. Server-side data fetching: If you're using server-side data fetching methods like getServerSideProps or Server-side Rendering (SSR), the data for your page will be fetched on each request.

If none of these reasons apply and your page is still being re-fetched, it might be due to some other configuration in your Next.js application or your hosting environment.

For more information, you can refer to the Next.js documentation (https://nextjs.org/docs/pages/building-your-application/data-fetching/incremental-static-regeneration).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@opal zodiac kapa.ai is still learning and improving, please let us how it did by reacting below

opal zodiac
#

Is location.reload and router.reload(window.location.pathname) the same? @tranquil sigil

tranquil sigilBOT
#

Let me check the knowledge base for you. One moment! :books:

#

Yes, location.reload() and router.reload(window.location.pathname) essentially do the same thing, which is to reload the current page. However, there are some differences in how they work:

  • location.reload(): This is a native JavaScript method that refreshes the current page. It causes the browser to refresh the page, which results in a new request being made to the server. This is equivalent to clicking the browser's refresh button.

  • router.reload(window.location.pathname): This is a method provided by the Next.js useRouter hook. It also refreshes the current page, but it does so within the context of the Next.js application. This means it will trigger any data fetching methods (like getServerSideProps or getStaticProps) associated with the page.

In most cases, these two methods will have the same result. However, if you have any client-side state in your Next.js application that you want to preserve, you might want to use router.reload(window.location.pathname) instead of location.reload().

Here's an example of how to use router.reload(window.location.pathname):

import { useRouter } from 'next/router'
 
export default function Page() {
 const router = useRouter()
 
 return (
 <button type="button" onClick={() => router.reload(window.location.pathname)}>
 Click here to reload
 </button>
 )
}

For more information, you can refer to the Next.js documentation (https://nextjs.org/docs/pages/api-reference/functions/use-router#routerreload).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@opal zodiac kapa.ai is still learning and improving, please let us how it did by reacting below

sweet axle
#

hello @tranquil sigil what is revalidateTag and 'tag' also is that possible to use for CMS / sanity using schemas fetches (Parden on my mistake i am new to this)

tranquil sigilBOT
#

Let me check the knowledge base for you. One moment! :books: