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#Caching in App router
blazing epochBOT
Yes, you can create a middleware in the App Router for caching. Below is an example of how you can set the Cache-Control header using middleware in Next.js:
// middleware.js
import { NextResponse } from 'next/server';
export function middleware(request) {
const response = NextResponse.next();
response.headers.set('Cache-Control', 'public, max-age=3600, stale-while-revalidate=59');
return response;
}
This approach is similar to the one mentioned in the Github Issue #50914 (https://github.com/vercel/next.js/issues/50914) where a user successfully set the Cache-Control header in middleware.
However, be aware that setting headers in middleware can sometimes be tricky because the middleware runs before the page is rendered. This means that certain headers might be overwritten or not behave as expected. For more complex scenarios, you might need to consider additional configurations or workarounds.
For more information on caching mechanisms in Next.js, you can refer to the Next.js Caching Documentation (https://nextjs.org/docs/app/building-your-application/caching).
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queen arch
@blazing epoch ok, I wonder can we apply this middleware to only homepage?
blazing epochBOT
Let me check the knowledge base for you. One moment! :books:
Yes, you can apply the middleware to only the homepage by using the matcher option in the middleware configuration. Here is how you can do it:
// middleware.js
import { NextResponse } from 'next/server';
export function middleware(request) {
const response = NextResponse.next();
response.headers.set('Cache-Control', 'public, max-age=3600, stale-while-revalidate=59');
return response;
}
// Apply the middleware only to the homepage
export const config = {
matcher: '/',
};
This configuration ensures that the middleware is only applied to the homepage route (/). The matcher option is used to specify the paths where the middleware should be active.