#what happen if not revalidating

1 messages · Page 1 of 1 (latest)

hot rampart
#

if i have a page that fetch products and render products based on this data , and filter them as well like this

import GetCategory from "@/actions/get-category";
import GetColors from "@/actions/get-colors";
import GetSizes from "@/actions/get-sizes";
import Billboard from "@/components/billboard";
import Filter from "./components/filter";
import GetProducts from "@/actions/get-products";
import NoResult from "@/components/ui/noResult";
import ProductList from "@/components/ui/productList";

interface CategoryPageProps {
  params: {
    categoryId: string;
  };
  searchParams: {
    colorId: string;
    sizeId: string;
  };
}

const CategoryPage: React.FC<CategoryPageProps> = async ({
  params,
  searchParams,
}) => {
  const products = await GetProducts({
    categoryId: params.categoryId,
    sizeId: searchParams.sizeId,
    colorId: searchParams.colorId,
  });

  console.log(products);

  const sizes = await GetSizes();
  const colors = await GetColors();
  const category = await GetCategory(params.categoryId);

  return (
    <div className="bg-white">
      <div className="space-y-4">
        <Billboard data={category.billboard} />

        <div className="px-4 sm:px-6 lg:px-8 pb-24">
          <div className="lg:grid lg:grid-cols-5 lg:gap-x-8">
            {/* MOBILE FILTER*/}
            <div className="hidden lg:block">
              <Filter data={sizes} name="Sizes" searchKey="sizeId" />
              <Filter data={colors} name="Colors" searchKey="colorId" />
            </div>

            <div className="mt-6 lg:mt-0 lg:col-span-4">
              {products.length === 0 ? (
                <NoResult />
              ) : (
                <ProductList title="T-Shirts" items={products} />
              )}
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};

export default CategoryPage;

when im not adding the

export const revalidate = 0

it only fetch some products and not others, why

covert barnBOT
#

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

#

The revalidate property in Next.js is used for Incremental Static Regeneration (ISR). This means that after a page is generated by getStaticProps, it can be re-generated again after a certain period of time (specified in seconds) when a request comes in. The revalidate property tells Next.js how often to regenerate the page.

If you don't include revalidate in your getStaticProps, the page will be generated at build time and will not be regenerated until the next build. This means that if your data changes on the server after the page has been built, the changes will not be reflected on the page until the next build.

In your case, if you're not using revalidate and you're fetching products, it's possible that some products are not being fetched because they were added or updated on the server after the page was built. Without revalidate, these changes will not be reflected on the page until the next build.

If you want your page to always show the most up-to-date products, you should use revalidate to tell Next.js to regenerate the page periodically. The value you provide to revalidate will depend on how often your product data changes and how important it is to have the most up-to-date data on the page.

For example, if you set revalidate to 60, Next.js will attempt to regenerate the page every 60 seconds when a request comes in. If the page is successfully regenerated, the next request to the page will show the updated data.

Here's an example of how you might use revalidate in your getStaticProps:

export async function getStaticProps() {
  const products = await GetProducts({ /* your parameters here */ });

  return {
    props: { products },
    revalidate: 60, // Regenerate the page every 60 seconds
  };
}
#

@hot rampart kapa.ai is still learning and improving, please let us know how it did by reacting below

hot rampart
#

@covert barn
im using the app route, i have 2 products, when i remove revalidate and refresh the page it only render one,
when i add the revalidate line and refresh the page again it shows both of them

covert barnBOT
#

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

#

The behavior you're experiencing is related to how Next.js handles data caching and revalidation.

When you don't use revalidate, the data for your page is fetched and rendered at build time. This means that if your data changes after the page has been built, the changes won't be reflected on the page until the next build. In your case, it seems like one of your products is not being fetched at build time, which is why it's not being rendered on the page.

When you add revalidate, you're telling Next.js to periodically invalidate the current page data and fetch the data again. This process is known as Incremental Static Regeneration (ISR). With ISR, your page can be updated with new data without having to rebuild the entire application. This is why when you add revalidate, both of your products are being rendered on the page.

The revalidate property accepts a number (in seconds) that determines how often your page data should be revalidated. For example, if you set revalidate to 60, Next.js will attempt to regenerate the page every 60 seconds when a request comes in. If the page is successfully regenerated, the next request to the page will show the updated data.

Here's how you might use revalidate in your code:

export const revalidate = 60

This will tell Next.js to revalidate the data for your page every 60 seconds.

For more information on data caching and revalidation in Next.js, you can refer to the Next.js documentation (https://nextjs.org/docs/basic-features/data-fetching#incremental-static-regeneration).

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

#

@hot rampart kapa.ai is still learning and improving, please let us know how it did by reacting below

hot rampart
#

im only in development enviroment, how can i commit a new build

#

@covert barn how can i commit a new build

covert barnBOT
#

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

#

To commit a new build, you need to follow the standard Git workflow. Here's a basic example:

  1. First, make sure you're on the correct branch where you want to commit your changes. If you're not, you can switch to it using the git checkout command. If the branch doesn't exist yet, you can create it using the git checkout -b command:
git checkout -b new-branch
  1. Once you're on the correct branch, you can start making changes to your code. After you've made your changes, you can stage them for commit using the git add command. If you want to stage all changes, you can use .:
git add .
  1. After staging your changes, you can commit them using the git commit command. You should include a message with your commit that describes what changes you made:
git commit -m "Your commit message"
  1. Finally, you can push your commit to the remote repository using the git push command. If the remote branch doesn't exist yet (which would be the case if you just created a new branch), you can set it up using the -u option:
git push -u origin new-branch

After you've pushed your commit, if you're using a platform like GitHub, GitLab, or Bitbucket, you can create a pull request to merge your changes into another branch (like the main or master branch).

If you're using Vercel for deployments, any changes pushed to your Git repository will automatically trigger a new deployment. You can see the status of the build through the bot comment made on your PR or on your Vercel dashboard (source (https://vercel.com/docs/getting-started-with-vercel/collaborate)).

#

Remember to replace new-branch with the actual name of your branch, and "Your commit message" with your actual commit message.

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