Cached index.html causing 404 errors after fresh app deployments

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A DEV Community article describes a common deployment problem where users still see a 404 error after a new app version is released. The stale cached copy of index.html is the root cause, since it references asset files that no longer exist on the server. The author explains that browsers and CDNs can keep serving the old HTML even after the build has changed. The piece outlines the general mechanism behind the issue and why it tends to appear right after a deploy. The source text provided is incomplete, so specific fixes and details from the full article are not covered here.

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