<link rel="stylesheet" href="main.css?hash=sha384-5rcfZgbOPW7..." integrity="sha384-5rcfZgbOPW7..."/>

    Etag: "sha384-5rcfZgbOPW7..."
    Cache-Control: max-age=31536000, immutable

How do you do version updates? Add content hash to all files except for root index.html.

Cache everything forever, except for index.html

To deploy new version upload all files, making sure index.html is last.

Since all files are unique, old version continues to be served.

No cache invalidating required since all files have unique paths, expect index.html which was never cached.

You have to ensure you absolutely have properly content hashes for everything. Images, css, js. Everything

“Incremental Static Regeneration” is also one of the funniest things to come out of this tech cycle.