This is SO's css path http://sstatic.net/so/all.css?v=6184" what is this ?v=6184"? -


This is the CSS path of the SO "What is this? ? V = 6184"?

What does this do? How to use it if it is useful? Can I use any site PHP, ASP.NET etc.

to control this caching Is a way of When the value of the "v" parameter changes, the browser will consider it a different URL and instead of using its cached copy, it will ask for a new copy of the file.

This technique is often used for certain "version" static files by providing something like timestamp in the query string.


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