html - Cache manifest and query strings

Question

I am investigating using a cache manifest. If I have a manifest such as:

CACHE MANIFEST
stylesheets/style.css

And in the page I have a CSS element referencing stylesheets/style.css?v=123.

Will the style.css file be retrieved from the cache or remotely?

Answer 1

The URL in the cache manifest and the URL you're calling must match (INCLUDING the query).

In your example:

CACHE MANIFEST stylesheets/style.css

in HTML: stylesheets/style.css?v=123

The browser will ALWAYS try to fetch the CSS file from the server, since only the query-less CSS file is cached locally. Use of stylesheets/style.css in cache is sufficient.