Thomas Dalton wrote:
In many of
those countries end-user points are often connected by
satellites, so no local caches would help. Unless, of course, we'd
have our own satellite :)
Think big, huh? ;)
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Satellite distribution by IP multicast is perhaps not as daft as it
sounds: the nature of satellite transmission means that it would cost
the same to send a one-way update datastream to local caches on an
entire continent as it would to send it to a single point on that
continent.
As a result, only a tiny amount of IP capacity on existing satellites
would need to be purchased ot keep local caches up-to-date. It still
wouldn't solve the problem of point-to-point distribution in countries
where no suitable point-to-point terrestrial infrastructure exists, but
it might work well enough for local university caches.
-- Neil