Stripping out select querystring attribute/value pairs so varnish will not vary cache by them

Question

My goal is to \"whitelist\" certain querystring attributes and their values so varnish will not vary cache between the urls.

Example:

Url 1: http:/         


        

Answer 1

Have you guys given this a try? https://github.com/Dridi/libvmod-querystring

Example
set req.url = querystring.regfilter(req.url, "utm_.*");