Rename Cache header to Cache-Status

[ghedo]

Cache-Status seems to better describe the information this header carries
and is potentially less confusing. It also seems more consistent with other
Cache-related headers (e.g. Cache-Control).

FWIW, some variants of *-Cache-Control are also somewhat popular in the
wild, e.g. the NGINX caching guide [0] uses X-Cache-Status and Cloudflare
uses CF-Cache-Control (though I'm not sure popularity matters much, since
either way servers will need to be updated).

[0] https://www.nginx.com/blog/nginx-caching-guide/

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@mnot As proposed a while ago on the mailing list https://lists.w3.org/Archives/Public/ietf-http-wg/2018JulSep/0318.html Happy to discuss this more in Prague.

[OlliV]

I support the one that is already in the draft because I don't see how it could be misleading. X-Something-Cache but I don't think the popularity matters because everybody will need to do some adjustment if they want to go for this.

[wimleers]

The current name is also clear to me. Can you explain what you find confusing about Cache?

I think it can be argued that Cache-Status would be more confusing since this header effectively is a log of actions by intermediaries, it doesn't convey any status. At most, it helps explain the values of the HTTP response.

A strong potential reason I can see to rename this to Cache-Status is to convey this exists to provide cache debugging information just like Proxy-Status exists to provide proxy debugging information (Proxy-Status is in progress at https://tools.ietf.org/html/draft-nottingham-proxy-status-00). Similarity in naming should then probably also imply similarity in structure though.

[PiotrSikora]

@wimleers Cache[-Status] and now-adopted Proxy-Status both use parameterised list from draft-ietf-httpbis-header-structure.

Now that Proxy-Status has been adopted by the WG, I'm also in favor of renaming Cache to Cache-Status.

[wimleers]

Thanks, then the last paragraph of my comment applies, so I now agree with renaming :)

[tfpauly]

Singapore: Already renamed, closing