W3C home > Mailing lists > Public > www-mobile@w3.org > November 2001

Re: CC/PP profile repository overworked?

From: Johan Hjelm <johan.hjelm@era-t.ericsson.se>
Date: Wed, 21 Nov 2001 14:14:54 +0900
Message-ID: <3BFB384E.54D18E0D@era-t.ericsson.se>
To: nick.denny@mci.co.uk
CC: www-mobile@w3.org
Mark is right, here are a couple of additional points:

If there was only one repository, that might be the case. However, since the
idea is that the repository will be distributed, residing in the profile
creators website, we see small risk of this. Other traffic (e.g. fetching
advertisements to web pages) already follow this model, and I have yet to hear
that Doubleclick is to be overworked....

Secondly, the profile is cached in the proxy retrieving the information for
the client when it has been read once. So the traffic will not be as large as
it sounds. The WAP gateway acts as a HTTP 1.1 proxy on the Internet side; at
least, this was how we intended it to be implemented. The profile-diff can
actually be a difference from an empty profile (of course you have to send the
empty profile first), this is how it is used to combine P3P with CC/PP in the
PIMI method.

Johan

nick.denny@mci.co.uk wrote:

> Hello,
>
> I'm in some confusion about CC/PP, specifically with regards to a CC/PP
> profile repository.
>
> Having read the CC/PP exchange protocol, section 6, the examples show
> that the profile information is sent as a list of URLs in the HTTP
> header. These URLs point to profile information of a CC/PP profile
> repository, which I understand can be any web server. So, if a user is
> viewing several web/wapsites, and every Origin server is CC/PP
> compliant, will this mean that the CC/PP profile repository will be
> accessed by every visited Origin server? Therefore, with potentially
> millions of people accessing different websites throughout the world,
> won't the CC/PP profile repository become highly over-worked, and if the
> CC/PP profile server, the Origin server and the end-user are all several
> routers apart, won't this add a large delay for the end-user?
>
> Thank you in advance,
>
> Nick Denny
> nick.denny@mci.co.uk
>
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     Ericsson Research Japan

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Received on Wednesday, 21 November 2001 00:15:01 UTC

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