[英]Varnish: ignore some cache cookies for hash computation
情況::
令人驚訝的是,這很難解決。 到目前為止,我發現的所有解決方案均假定(2)為白名單,而我需要黑名單。 而且大多數解決方案都會刪除應該通過后端的Cookie。
那么(未經測試)如何:
# We use builtin.vcl logic and 'return' from our vcl_recv in order
# to prevent default Varnish behaviour of not caching with cookies present
sub vcl_recv {
# your vcl_recv starts here
# ...
# your vcl_recv ends here
if (req.method == "PRI") {
/* We do not support SPDY or HTTP/2.0 */
return (synth(405));
}
if (req.method != "GET" &&
req.method != "HEAD" &&
req.method != "PUT" &&
req.method != "POST" &&
req.method != "TRACE" &&
req.method != "OPTIONS" &&
req.method != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
if (req.method != "GET" && req.method != "HEAD") {
/* We only deal with GET and HEAD by default */
return (pass);
}
if (req.http.Authorization) {
/* Not cacheable by default */
return (pass);
}
return (hash);
}
sub vcl_hash {
set req.http.X-Cookie-Hash = regsub(req.http.cookie, "KNOWN1=[^;]+;", "");
set req.http.X-Cookie-Hash = regsub(req.http.X-Cookie-Hash, "KNOWN2=[^;]+;", "");
hash_data(req.http.X-Cookie-Hash);
}
這會刪除每個已知的cookie並在其余數上散列:)不理想,因為它不能保證標題中cookie的順序,但其他應該起作用。
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