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Space Varying URIs in Summary: Section 2: What does a URI identify?

From: Elliotte Rusty Harold <elharo@metalab.unc.edu>
Date: Tue, 19 Mar 2002 12:24:59 -0500
Message-Id: <p0433010ab8bd237b652c@[]>
To: www-tag@w3.org
I notice that this draft makes explicit the idea that a resource is 
time-varying because what's at the end of the URI.

Are resources also space-varying? Consider the impact of proxy 
servers (especially infrequently updated ones like AOL's), local 
caches, and even DNS servers that don't always agree with each other. 
You may not get the same resource I get when resolving the URI 
http://www.cafeconleche.org/ even if we resolve it at the same moment 
in time. You may have an older copy in your cache. My DNS may deliver 
a different mirror site that hasn't been updated yet, etc.

Does this need to be discussed? Either to confirm it as proper 
behavior or to deprecate it as indicative of broken software and 

| Elliotte Rusty Harold | elharo@metalab.unc.edu | Writer/Programmer |
|          The XML Bible, 2nd Edition (Hungry Minds, 2001)           |
|             http://www.cafeconleche.org/books/bible2/              |
|   http://www.amazon.com/exec/obidos/ISBN=0764547607/cafeaulaitA/   |
|  Read Cafe au Lait for Java News:  http://www.cafeaulait.org/      |
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Received on Tuesday, 19 March 2002 12:40:22 UTC

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