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section-io-gists/RemoveQueryString.vcl

Last active May 12, 2017 05:23
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Varnish 4 - Strip browser side tracking script to improve cache hit rate
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RemoveQueryString.vcl
sub vcl_recv {
# Strip browser side tracking script to improve cache hit rate
if (req.url ~ "[?&](utm_source|utm_medium|utm_campaign|gclid|cx|ie|cof|siteurl|mc_cid|mc_eid)=") {
set req.url = regsuball(req.url, "(?:(\?)?|&)(?:utm_source|utm_medium|utm_campaign|gclid|cx|ie|cof|siteurl|mc_cid|mc_eid)=[^&]+", "\1");
set req.url = regsuball(req.url, "(?:(\?)&|\?$)", "\1");
}
}
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