[Mnet-devel] Re: [p2p-hackers] Freenet, Mnet, GNUnet, Circle

[Ian Clarke]

Greg Bildson wrote:
> Well, I expect that the queries that Gnutella experienced were somewhat
> unique in that our changes could not be applied to your situation.

Yeah, we do have a somewhat analogous mechanism whereby nodes will 
effective cache failures in a "failure table" - so if you route a 
request that subsequently fails, and you receive another request for the 
same key within a certain time limit (30 minutes IIRC) then that request 
would fail immediately.

This wasn't so much intended as a way to prevent abuse (although it did) 
  as a way to try to make queries fail more quickly, which benefits the 
requester as well as the network as a whole.

In practice, however, we found that duplicate requests for the same key 
did not occur frequently enough for this mechanism to have a significant 
effect.

Ian.