We introduce a distributed hash table (DHT) with logarithmic degree and logarithmic dilation. We show two lookup algorithms. The first has a message complexity of log n and is robust under random deletion of nodes. The second has parallel time of log n and message complexity of log~2n. It is robust under spam induced by a random subset of the nodes. We then show a construction which is fault tolerant against random deletions and has an optimal degree-dilation tradeoff. The construction has improved parameters when compared to other DHT's. Its main merits are its simplicity, its flexibility and the fresh ideas introduced in its design. It is very easy to modify and to add more sophisticated protocols, such as dynamic caching and erasure correcting codes.
展开▼
