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Re: Multiple Roots are "a good thing" - Karl Auerbach
- From: Simon Higgs
- Date: Mon Mar 19 00:07:34 2001
At 03:47 PM 3/18/01 -0500, Greg A. Woods wrote:
I don't get this argument at all. A telephone white pages lookup takes a
name [a-z + 0-9] and looks up a number [0-9]. DNS does exactly the same
thing. The only difference is a hierarchical naming convention in DNS which
specifies/delegates where the information is stored. The information could
reside in the same place, or be distributed.
> I would suggest that telephone books/directories are not an appropriate
> analogy. Rather, DNS is a lot closer to the internal plumbing of the net -
> more akin to Signalling System #7. I'd guess that for 95% or more of phone
> calls, the caller already knows the numeric phone number in question -
> while for the Internet, very few people give their email addresses as
> firstname.lastname@example.org or http://184.108.40.206. Telephone directories
> are optional in most cases, DNS is not.
You are absolutely correct. :-)
Telephone directories are most definitely *not* like the DNS.
DNS can be searched up, down and sideways. It may change the normal query
method or add additional transactions to a lookup, but it can be searched
and indexed. The questions are "does the index scale" and "does it matter"?
A directory is something that
can be searched with approximate matches. Because the DNS is
"D"istributed, it is literally impossible search it that way (and if
there were multiple roots then all users would really be up the creek
without the proverbial paddle!).
It's a feature not a bug...