Matt Crawford writes:
> I think I detected a bogon.
That's because you're not paying attention.
Consider a future world with 10000000 sites, each with one DNS cache and
a few DNS servers and a bunch of miscellaneous computers. Let's say each
site looks up addresses at 10000 different ISPs every week.
Client-side indirection, such as A6, means that those address lookups
have to be supplemented by queries to all the ISPs. The cache sends at
least one query per ISP every week, even if the TTLs are longer than
that; caches don't (and shouldn't) save information for longer than a
week. Total work: at least 100000000000 queries per week.
Server-side indirection means that each site has to watch for changes at
its own ISP. Ten queries per week will be more than enough even if we
want to allow a change every day. Total work: at most 100000000 queries
per week. Pushing, instead of pulling, would be even less expensive.
How can anyone claim that 100000000 queries per week is ``more polling''
than 100000000000 queries per week? This is completely ridiculous.
(I'm not saying that the traffic is noticeable either way.)
> Bottom line: there is such little experience with A6 that people's
> thinking is sometimes a bit muddy.
Your thinking, for example.
---Dan
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