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Re: Remote DOM access ??

From: \ <assini@kamus.it>
Date: Thu, 08 Oct 1998 09:51:15 +0100
Message-ID: <361C7D03.20190566@kamus.it>
To: "'DOM list'" <www-dom@w3.org>
keshlam@us.ibm.com wrote:

> Smart XML cache does sound like the way to go. Of course the API it would
> present to the application would in turn be a DOM, plus whatever methods
> are required to control the cache behavior.
>
> As far as I can tell, the back-end API -- the protocol between the cache
> and a document server -- is currently left as an exercise for the reader.
> One can argue about whether or not it should simply be a networked version
> of the DOM interfaces.
>

Exactly, it would be DOM on both the client and the server side (the cache
mechanism will access XML on the server through DOM and will present the
result as DOM at the client).

The internal protocol between the cache's server and client side naturally
could not be DOM itself.

I see it as a kind of feedback mechanism with:
- a connection through which the server side cache continuously sends to the
client the XML elements that it forecasts the client is going to ask for
- a feedback call that the client side will use to correct the server side
guessing by explicitly requiring the elements that it can not find in the
local cache

The main problem is to figure out the heuristic that the server is going to
use to forecast client behaviour.

Should we use some kind of self adaptive genetic algorithm ? It might be the
case, we start from the principle that the bottleneck is in the network, not
in the processing time (otherwise a cache would not be needed in the first
place) so some computing intensive but powerful algorithm could be the correct
choice.

BTW this cache could be used not only to access far distant XML files but also
XML Databases and dynamically built (and possibly infinite length) XML.

It sounds as an interesting programming exercise, anyone interested in working
on it ?

Regards.

--
Pasqualino "Titto" Assini
The Data Archive - University of Essex, UK
Received on Thursday, 8 October 1998 04:51:14 GMT

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