Equalchord based web services discovery model

In order to extend the web services discovery scope, improve discovering efficiency and realize load balancing, Equalchord based-on web services discovery model (ECSDM) is proposed. In this model, web services are firstly classified by NACIS (North American Industry Classification System), then published to nodes by the Chord routing algorithm. To achieve load balancing between different nodes, overload rate is defined then node joined-in algorithm and self balancing algorithm are illustrated. When nodes join in the Equalchord, it must get the network load information and set its identifier accordingly to share the load of overloaded nodes. By the self-balancing algorithm nodes would periodically compare its load with its neighbors and share its loading clockwise. A simulation system ChordSim was designed and implemented. Experimental results show the good performance of this model and algorithms.