- From: Jonathan Rees <jar@creativecommons.org>
- Date: Fri, 9 Jul 2010 15:21:22 -0400
- To: www-tag@w3.org
- Cc: "Henry S. Thompson" <ht@inf.ed.ac.uk>
Herbert Van de Sompel gave me the following useful pointers regarding
Memento ("time travel for the Web"):
For those interested in reviewing the proposal at this moment
in time, and willing to invest 20 minutes in doing so, I think a
combination of http://www.mementoweb.org/guide/quick-intro/ and
http://www.mementoweb.org/guide/http/ should provide enough material.
The idea is that for a given resource R there can be a "timegate"
resource Q having the property that a representation Z is a current
representation of Q if and only if it at some time t (past or present)
Z was/is a representation of R. You use Accept-datetime: on a GET Q
request to ask for a past representation of R.
In the language of HTTPbis, all the representations of Q are the "same
information" [1] when they come from GET Q even when they're not the
"same information" when they come from GET R.
(This is only a teaser. Do not critique the protocol based on this
possibly mangled description. Look at the pages cited above.)
This relates to our ISSUE-53 (generic resources) and ACTION-231.
Jonathan
[1] http://tools.ietf.org/html/draft-ietf-httpbis-p3-payload-09#section-4
Received on Friday, 9 July 2010 19:22:00 UTC