| hit |
Boolean |
When true, indicates that the
request was satisfied by the cache; that is, it was not forwarded,
and the response was obtained from the cache. |
RFC 9211 |
| fwd |
Token |
When present, indicates that the request went forward towards
the origin; its value indicates why. |
RFC 9211 |
| fwd-status |
Integer |
Indicates which status code (see RFC 9110, Section 15)
the next-hop server returned in response to the forwarded request. |
RFC 9211 |
| ttl |
Integer |
Indicates the response’s remaining freshness lifetime
(see RFC 9111, Section 4.2.1)
as calculated by the cache, as an integer number of seconds, measured as closely as possible to when
the response header section is sent by the cache. |
RFC 9211 |
| stored |
Boolean |
Indicates whether the cache stored the response
(see RFC 9111, Section 3); a true value indicates that it did. |
RFC 9211 |
| collapsed |
Boolean |
Indicates whether this request was collapsed together with one or more other forward
requests (see RFC 9111, Section 4); If true, the response was successfully
reused; if not, a new request had to be made. |
RFC 9211 |
| key |
String |
Conveys a representation of the cache key
(see RFC 9111, Section 2) used for the response. |
RFC 9211 |
| detail |
String or Token |
Allows implementations to convey additional information not captured in
other parameters, such as implementation-specific states or other caching-related metrics. |
RFC 9211 |
