- From: Larry Masinter <masinter@parc.xerox.com>
- Date: Tue, 3 Sep 1996 09:41:15 PDT
- To: pball@hab-software.de
- CC: www-talk@w3.org
Peter, HTTP/1.1 revises the cache directives of HTTP in a way that we hope will allow caching to be reliable; you might want to review the HTTP/1.1 spec and see if it accomplishes what you want. For example, in the case where the result of a CGI program is dependent on the "user-agent:" header, it's possible to specify "Vary: user-agent". An intermediate cache can (if it wishes) choose to cache the resulting document and serve it up again to other clients with the same user agent field. If the origin server also supplies an "Etag:" and is willing to support "If-match:", it's also possible to note when 'equivalent' user agents are used and still not transmit the file. http://ds.internic.net/internet-drafts/draft-ietf-http-v11-spec-07.ps (and .txt; note that the .ps file is over 100 pages long, and the text version is longer). The document's been approved to be published as an RFC, although it might be a while before an RFC number is assigned and it is published. Larry
Received on Tuesday, 3 September 1996 12:41:56 UTC