Home

Analysis and Overview of Next.js Code with Dynamic Server-Side Data Fetching and Rendering

108 views

The Next.js code you've provided contains both server-side data fetching and rendering logic. Here's an overview of its behavior concerning when and how it runs:

generateMetadata

The generateMetadata function runs dynamically every time the page is requested. This function is used to generate metadata (like the title, keywords, and description) for the page based on the data fetched from an API endpoint. The metadata is generated asynchronously using the fetch call and the provided params.

SharedSearch Component

This is the default component for the page and follows server-side rendering practices. Here's what happens:

  1. Server-Side Data Fetching: The SharedSearch component contains an async function where it fetches data from the server using the fetch API call.

  2. Dynamic Rendering: The data fetching is done on the server every time the page is requested. Since the data depends on the params.id sent with the request, the fetching will run each time that specific page is accessed.

  3. Conditional Rendering: The SharedSearch component conditionally renders content based on the fetched data. If no data is returned (i.e., the response is not OK), it returns an undefined value and nothing is rendered.

Conclusion

  • Run Time: The provided code fetches data dynamically on each request, meaning it runs every time the page is requested. The HTML is generated on the server at request time and then sent to the client.

  • Build Time: There is no static generation or static site generation (SSG) involved in this code. Thus, the page isn't pre-built during the build process; instead, it fetches data and renders dynamically at run time.

Static Generation (Optional)

If you wanted this page to be statically generated at build time with potential revalidation (Incremental Static Regeneration or ISR), you would need to modify your component and possibly leverage getStaticProps and getStaticPaths functionalities.

However, given the current implementation, it is purely server-side rendered and fetches data on each request.