"Enhancements in Next.js 13: Optimizing static site generation with improved cache-control and index.txt management

In my setup with Next.js version 13,

I have stored my build in a bucket.

My goal is to ensure that the user's browser always fetches the latest build of my static site. However, I'm facing an issue where each folder/page on the website has an index.txt file that is cached for 1 hour in the browser. This file seems crucial for updates and rebuilds, as it plays a significant role. Surprisingly, this file remains unaffected by the custom generateBuildId() function in next.config.js.

Instead of adjusting the cache settings in the bucket for individual files,

I devised a script that modifies every path in files containing index.txt to include a query parameter indicating the latest version.

Therefore, after building, I run a bash script (which locates index.txt and appends ?v={my version here} to it):

find out -type f -exec grep -q "index.txt" {} \; -exec sed -i '' -e "s/index.txt/index.txt%3Fv=$(date +%s)/g" {} \;

This approach successfully updates my 

out/_next/static/chunks/139-72884d103bad554b.js
file.

However, when attempting to access these files with the encoded URL like 

mywebsite.com/index.txt%3Fv=1234567
, the browser encounters a 404 error.

Is there a way in Next.js 13 to perform SSG rebuilds and apply new versions to all files (including .txt files)?

Alternatively, is there a method to add ?v={buildId} to all asset dependencies so that the browser does not encode it?

Or perhaps there is another strategy to prompt browsers to refetch content after a rebuild?

Thank you sincerely,

javascriptnext.jscache-controlnext.js13

Answer №1

Before making any changes to your code, make sure to review the generateStaticParams function. The structure of the app directory might have been modified from its original location in the pages directory.

If necessary, delete the params block:

return results.map((result) => ({
  params: {
    slug: result.slug,
  }
}));

To update it correctly, use this revised code snippet:

return results.map((result) => ({
  slug: result.slug,
}));

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