[92074] in North American Network Operators' Group
Re: NNTP feed.
daemon@ATHENA.MIT.EDU (Andrew - Supernews)
Tue Sep 5 21:32:12 2006
To: "North American Noise and Off-topic Gripes" <nanog@merit.edu>
In-Reply-To: <02ae01c6d148$30762f20$6601a8c0@atlanta.polycom.com> (Stephen
Sprunk's message of "Tue, 5 Sep 2006 18:58:55 -0500")
Date: Wed, 06 Sep 2006 02:31:05 +0100
From: "Andrew - Supernews" <andrew@supernews.net>
Errors-To: owner-nanog@merit.edu
>>>>> "Stephen" == Stephen Sprunk <stephen@sprunk.org> writes:
[NNTP servers]
Stephen> OTOH, it might be doable if you didn't carry the
Stephen> alt.binaries groups; those account for well over 90% of the
Stephen> bytes on usenet today,
More like 99.9%, and an even larger proportion if you filter out
binaries from other groups too.
Broadly speaking the daily volume is something like 2.8TB/day for
the whole feed, or somewhere in the ballpark of 1GB/day for the
non-binaries feed.
Stephen> Another option is to run a caching-only news server,
Stephen> provided you can find a willing upstream.
If you're talking about binaries, the fact is that Usenet simply does
not cache well. You'll have to use many terabytes of disk to get even
a modest hit-rate, and the performance benefits will be slight.
For text, there's no point in running a caching server rather than a
real one, since the incoming bandwidth for text is so small (couple of
hundred kbits) and the storage requirements so modest (one 36GB spool
disk will hold a month's traffic).
--
Andrew, Supernews
http://www.supernews.com -- individual and corporate NNTP services
