This comes with a reason: fwd=bypass - the cache was configured not to handle this request fwd=method - the request must be forwarded because of the HTTP method used fwd=uri-miss - there was no matching cached data available for the request URI fwd=vary-miss - there was matching cached data for the URI, but a header listed in the Vary opens in a new tab header didn't match fwd=miss - there was no matching cached data available (for some other reason, e.g. if the cache isn't sure why) fwd=stale - there was matching cached data, but it's stale fwd=partial - there was matching cached data, but only for part of the response (e.g. a previous request used a Range opens in a new tab header) fwd=request - the request requested non-cached data (e.g.