... unless it comes back as DNF, in which case they answer "Yes". Basically a "I have this, but let's let the 'owner' know it's popular" scheme. Better to translate it to an InsertRequest, though. That way, if you get a collision, great, the data is still there. If not, you send the data both ways, up to the "best" node and down to the node requesting it.
But you can not answer an insert with a DNF. The insert would waste bandwidth.
Even with those fixes the proposal loses. It solves the "popular-to-death" problem but opens up new flooding attacks.
Popular-to-death is a very difficult attack where you request the same key from lots of nodes that should NOT be specalized in it.
It was not my intension to prevent that attack. The proposal should increase the lifetime of data and improve routing even more than pcaching did. IIRC pcaching was introduced after it was successful in this regard in simulations.
-- Thomas Leske
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