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   RE: [xml-dev] best practice for providing newsfeeds ?

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Is it a good 80/20 tradeoff though?  IOW, how 
often would an unchanged repeat occur and what 
is the penalty?  

I think that depends on the application of the 
syndicated information.  Again, the reliability 
that Bob Wyman is discussing comes at a cost 
of features and the trade offs vary by application. 
If the scope of the application is drifting, there 
is no single answer or best strategy, IME.  What 
David Megginson and John Cowan are discussing 
with regards to NewsML apps looks right in that 
context, particularly the reference to DRM.  But 
is it right for any and all applications of RSS/Atom? 
And that brings us back to Joshua's point of 
customer pull.  Who is pulling and for what 

Techies can be customers. No D'oh, but scale 


-----Original Message-----
From: Thomas B. Passin [mailto:tpassin@comcast.net]

Dare Obasanjo wrote:

> They are orthogonal problems. The problem isn't how to avoid repeating
> an item, it is how to show one has been changed since the last time the
> reader saw it.  

I think the idea is that if you see an item and you already have seen 
its GUID before, then you know it has been changed.  That will work in a 
single client but it will mislead you if the feed repeats an unchanged 
item for whatever reason.


Tom P

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