On Mon, Aug 27, 2018 at 11:37:48AM -0400, Gene Heskett wrote:
>
> That bandwidth limit is not on your side of the isp, its the bandwidth
> from the main trunk lines to the isp. NNTP is a huge bandwidth hog
> regardless of how much of it your isp accepts for spooling on local disk
> to serve you.
>
This is not the case.
The NNTP server-to-server algorithm is analogous to rsync,
if you think of:
- each message is a file
- each newsgroup is a directory
- if the receiver doesn't have a directory, it won't be
sync'd over from the sender
- the sender/receiver don't bother looking at contents
of each file to decide whether to update, just the name-timestamp
And it always goes in exactly one direction; when the receiver
wants to send messages back upstream, that's a different
connection in which they swap places.
NNTP is a bandwidth hog in exactly the same proportion as the
space it occupies on disk.
I have simplified for the sake of a familiar analogy.
-dsr-
