: Uploading New Version Of Media Files Are Still Cached In Browser Sorry if this is the wrong venue. I upload new media files to web site (MP3 or OGG). Visitors clear their cache and refresh

@LarsenBagley505

The dificulty here is the networks with which the users are accessing your site. It used to be that business networks mainly cached the static content but now internet service providers are doing the same to improve speeds for their customers as well as decreasing upstream bandwidth on the peering connections. The easiest way to fix this is to do what is called cache busting which deals with all major types of caching including ISP caching, LAN caching, and browser caching. What you do is add a variable query string to the end of the file such as...

domain.com/static-file.oog?v=12345

and vary that query string each time the file is updated. While the query string will make no difference to the file itself as the query string will be ignored as having no relevance to the file in question caches will see it as a new URL and so will make the request from your server instead of from the cache in question.

As a side note this is how most of the major networks such as Facebook and Google themselves also break caches for when they push updated static content.

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