fuf-hash.vcl

sub vcl_hash {
    hash_data(req.url);
    // Summarize images01, images02 ...
    if (req.http.host) {
        hash_data(regsub(req.http.host, "^images\d\d\.", "images"));
    } else {
        hash_data(server.ip);
    }
    // Separate cache for ajax requests
    if (req.http.X-Requested-With) {
        hash_data(req.http.X-Requested-With);
    }
    // Per-user frontend caching (do not make separate copies of css/js)
    if (req.http.host && req.http.host ~ "^(www\.)?oursite\.(at|com)" && req.url !~ "^/(css|js|images|fonts)/") {
        if (req.http.Cookie ~ "SESSID") {
            hash_data(regsub(req.http.Cookie, "^.*?SESSID=([^;]*).*$", "\1"));
        }
    }
    return (lookup);
}