>
>
>
> hardie@equinix.com wrote:
> >
> > Joe writes:
> > > There is no such thing as "on behalf of" in proxies.
> > > They cache things they get, and serve them to requests they receive.
> >
> > Unfortunately, the "on behalf of" section of the statement does impact
> > how a cache works. For example, the cost (in latency or dollars) to
> > reach an origin server is likely to be higher for a proxy that acts on
> > behalf of a campus or organization than for a proxy that acts on behalf
> > of a content-provider network. This means that the replacement algorithm
> > for the proxy acting on behalf of the content-provider network may be
> > different than the replacement algorithm for the proxy acting on behalf
> > of a campus.
>
> These are tuning metrics. We're defining what a proxy is,
> not who pays for it.
>
> Perhaps I should rephrase - there is no such thing as "intent"
> in a taxonomy. (unless we're classifying philosophies :-)
I think there is a granularity question here, and that we disagree on
the level of granularity required. The difference between and a proxy
and a surrogate is reflected in operation in a number of ways,
including placement in the network, relationship to other network
elements, and the thresholds used for caching proxying requests; to
me, those aren't just tuning metrics, but important parts of how these
devices act in the network. You can combine them into a single term,
but I believe doing so forces you then to define derivative terms
which are less clear.
regards,
Ted Hardie
This archive was generated by hypermail 2b29 : Thu Nov 18 2004 - 11:21:27 MST