BAN variant of varnish cache

Nils Goroll slink at
Mon Oct 21 10:27:02 UTC 2019

(redirecting the response to varnish-misc, where the question would have belonged)

On 14/10/2019 16:13, Santosh Abraham wrote:
> Using *BAN*, is it possible to invalidate a particular variant of a varnish cache?

What you are trying to do should just work, and I cannot spot an error in your
VCL with regards to the ban handling.

But your use of the Vary header looks wrong, It is not a request header but
rather a response header (which you need to set in vcl_backend_response) and
also the value if the Vary header is the name of a request header.

So in your case it should be something like:

sub vcl_backend_response {
    if (beresp.http.Vary) {
	set beresp.http.Vary = beresp.http.Vary + ", X-BOLT-SITE-LOCALE"; } else { set beresp.http.Vary = "X-BOLT-SITE-LOCALE";


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