I just don’t get it. Their last paragraph describes how they changed their dynamic site to be static. So then why do you need workers at all? Just deploy to a CDN.
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
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