Re: Using the DHT to find download sources

> > The question is again "how to figure out popularity"
> 
> Jupp :) 
> 
> Maybe Ultrapeers could just check the query with their combined
query routing 
> table. If there can't be a result in the QRP horizon, the query
might be a 
> rare query, since it isn't available within 2 hops from the checking
UP. 
> 
> (I'm not really sure if that holds true in real life. Could someone
to a test 
> for that?)
> 
> But maybe we could altogether avoid keyword queries in the DHT,
keeping it 
> optimized for Hash queries. 
> 
> The reasoning is, that a hash query is a different task than a
keywork query, 
> and so each task should be done by a different tool which can be
optimized 
> for the task. 
> 
> Luckily Gnutella is heavily optimized for Keyword queries, and
Kademlia can do 
> Hash queries very well, so we already have two specialized tools. 
> 
> One tool for one task, and a GUI to bind them together, so users
don't have to 
> know that there are two tools, just that the program can do both tasks 
> exceptionally well (nothing keeps you from telling your users what
you do, 
> though, as long as it fits with your GUI policy). 
> 

Hybrid routing is an active research area. I searched the paper
Michael pointed out (The case for a hybrid P2P search infrastructure,
BT Loo, R Huebsch, I Stoica, JM Hellerstein - Proceedings of the 3rd
IPTPS, 2004) in google scholar. This paper has 124 citations so far.
There should be something interesting to read. 

Best,
Peng