[mythtv-users] Mooting architecture for a DataDirect replacement

Peter Schachte schachte at csse.unimelb.edu.au
Fri Jun 22 04:25:39 UTC 2007


Jay R. Ashworth wrote:
> On Thu, Jun 21, 2007 at 02:33:38PM +1000, Peter Schachte wrote:
>> I would think rsync would be more efficient for the server.
> 
> Sure.  But NNTP and "believe the last signed entry you got for the
> timeslot/channel" is even lower load.  On both ends.

If you read further in my posting I suggested something more like NNTP, where
the server holds precomputed differences to be downloaded.  I assume you intend
each "newsgroup" in your system would be a single channel, and an "article"
would be some update to the schedule for that channel (which may be an update
to an existing program entry as well as an added entry).

The main difference is that (by my assumption) you're keeping different
channels separate, whereas I'm keeping everything for one area together.
Whether the overhead of having to ask for each channel separately i your scheme
is more or less than the waste in my scheme from some people downloading info
about channels they don't want is not clear to me.  But in both cases the big
improvement comes from only downloading changes.

-- 
Peter Schachte              I worry that 10 or 15 years from now, [my child]
schachte at cs.mu.OZ.AU        will come to me and say 'Daddy, where were you
www.cs.mu.oz.au/~schachte/  when they took freedom of the press away from
Phone: +61 3 8344 1338      the Internet?' -- Mike Godwin


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