BAN variant of varnish cache

[Santosh Abraham]

Using *BAN*, is it possible to invalidate a particular variant of a varnish
cache?

We use locale in http vary header to keep different variants of the cache,
but the *BAN* configured is invalidating all the cache.



*BAN configuration *

sub vcl_backend_response {

    set beresp.http.x-ban-locale = bereq.http.X-BOLT-SITE-LOCALE;

    set beresp.http.x-url = bereq.url;

}



sub vcl_deliver {

    unset resp.http.x-ban-locale;

    unset resp.http.x-url;

}



sub vcl_recv {

    if (req.method == "BAN") {

        if(req.http.x-ban-regex) {

            ban("obj.http.x-ban-locale == " +req.http.X-BOLT-SITE-LOCALE +"
&& obj.http.x-url ~ "+req.http.x-ban-regex);

        } else {

            ban("obj.http.x-ban-locale == " +req.http.X-BOLT-SITE-LOCALE +"
&& obj.http.x-url == "+req.url);

        }

        return(synth(200, "Ban Added"));

    }

}



*CURL command to add the BAN*


curl -v -XBAN -H 'x-ban-regex:^/boltapi/v1/ads*(\?.*)*$' -H
'X-BOLT-SITE-LOCALE:en_ZA' -H 'Vary:en_ZA' {hostname}:{port}
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