On Tue, Aug 22, 2006 at 09:58:21PM +0100, Michael Rogers wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Matthew Toseland wrote: > > We can prevent flooding with useless content by for example having > > inserts not start at the top of the LRU. > > I was thinking about bandwidth/request flooding rather than > datastore/cache flooding, but I guess that's an issue too.
Yeah, bandwidth/request flooding is an issue. > > > Can we add in insert verification later on? > > Are we even sure it can be done? If not, adding a tit-for-tat mechanism > based on the number of requests answered will just create an incentive > to drop inserts (and possibly lie about it) in order to answer more > requests. Well, is some sort of auditing mechanism plausible? > > > The basic problem is that we need to tune things so that it is cheaper > > to keep using an existing node, and build up some trust with it, than to > > connect to a new node. > > I agree this is crucial. The problem's made more difficult by the fact > that new nodes aren't very good at answering requests (they have empty > stores and few connections), so we can't expect them to perform as well > as our existing neighbours to start with. Right. > > > This isn't necessarily insoluble either: Although > > most successful requests will likely come from a new node (on a large > > network), we won't necessarily succeed in our attempt to connect to > > them. Sorry, "come with" not "come from". > > Sorry, I don't follow - are you saying the difficulty of finding and > connecting to nodes will be high enough to discourage people from > exploiting them and moving on? It might be. > > Cheers, > Michael > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.5 (GNU/Linux) > > iD8DBQFE62/tyua14OQlJ3sRAp3xAJ9E61xGXOXkb3pyzbeWRcuX9V+oWgCgngnG > VGW1fhzt0uUpH2VleyY7ias= > =dFl1 > -----END PGP SIGNATURE----- > _______________________________________________ > Tech mailing list > Tech at freenetproject.org > http://emu.freenetproject.org/cgi-bin/mailman/listinfo/tech > -- Matthew J Toseland - toad at amphibian.dyndns.org Freenet Project Official Codemonkey - http://freenetproject.org/ ICTHUS - Nothing is impossible. Our Boss says so. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: Digital signature URL: <https://emu.freenetproject.org/pipermail/tech/attachments/20060822/0332b61f/attachment.pgp>
