varnish.txt

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    if (req.request == "POST") {
        return (pipe);
    }
    if (req.url ~ "^/(s/|favicon.ico|download/resources/|download/batch/|images/icons/)") {
        set req.http.X-Static = "yes";
        remove req.http.User-Agent;
        remove req.http.Cookie;
        remove req.http.Referer;
        return (lookup);
    }
    return (pass);
}

sub vcl_fetch {
    if (req.http.X-Statis == "yes") {
        remove beresp.http.Set-Cookie;
    }
    return (deliver);
}

sub vcl_hash {
    set req.url = regsub(req.url, "[?&]_=\d+", "");
    set req.url = regsub(req.url, "^/s/en_US.[^-]*-", "/s/en_US-x-");
    hash_data(req.url);
    return (hash);
}