BChord: Bi-directional routing DHT based on chord

A novel Distributed Hash Table BChord is presented in this paper. The standard Chord routes only in clockwise direction. Through adding extra anti-clockwise fingers in Finger Table, BChord adopts bi-directional routing mechanism based on Chord. Though fingers in BChord almost double to Chord, results from theoretic analysis show that BChord evidently minimizes the Average Path Length and increases efficiency of broadcast message compared with Chord.