Conditional GET Proposal for HTTP Caching

Roy T. Fielding (fielding@simplon.ICS.UCI.EDU)
Wed, 9 Mar 1994 23:20:07 --100

Hello all,

I made a proposal in January about providing a conditional GET
capability in HTTP. It involves accepting a Last-modified header
in an HTTP request and sending the document only if the Last-modified
date of the document is more recent than the one in the request.

The full proposal is now available at

I was wondering whether any of the server authors are planning on
including this feature in future versions?

...Roy Fielding ICS Grad Student, University of California, Irvine USA