Request: add hook to allow modification of the cache key
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I have geo-targeted content that is inserted using custom shortcodes on pages throughout my site. As the content changes slightly depending on the user’s country, this makes the page cache useless as the first visitor to a page caches it for everyone else, even if they are from a different country.
I found a fix which requires editing the code of W3 Total Cache which of course will need to be reapplied any time the module is updated, which is a hassle and a recipe for errors.
https://wpower.daniel-zahariev.info/tweak-w3tc-enable-page-cache-geotargeting/What I would ask the dev of this module is to allow us to call a function before the cache key is returned that can be used to modify the cache key. In my case I would append the user’s country to it. You could name the function and check using function_exists before calling it, or allow us to specify the function name using the admin interface. Then we add said function to our theme and use it to modify the cache keys as needed.
Thanks
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