On Routing in Distributed Hash Tables

There have been many proposals for constructing routing tables for Distributed Hash Tables (DHT). They can be classified into two groups: A) those that assume that the peers are uniformly randomly distributed in the identifier space, and B) those that allow order-preserving hash functions that lead to a skewed peer distribution in the identifier space. Good solutions for group A have been known for many years. However, DHTs in group A are limited to use randomized hashing and therefore, queries over whole identifier ranges thus do not scale. Group B can handle such queries easily. However, it is more difficult to connect the peers such that the resulting topology provides efficient routing, small routing tables, and balanced routing load. We present an elegant new solution to construct an efficient DHT for group B. Our main idea is to decouple the identifier space from the routing topology. In consequence, our DHT allows arbitrarily skewed peer distributions in the identifier sp...

• Type: Conference
• Year: 2007
• Where: P2P
• Authors: Fabius Klemm, Sarunas Girdzijauskas, Jean-Yves Le Boudec, Karl Aberer
• Keywords: Identifier Space, P2P 2007, Peer-to-Peer Computing, Routing, Routing Tables