Smart Proxies for Accessing Replicated Web Services

SmartWS is a system that relies on smart proxies to encapsulate a variety of Web service-selection policies, including a new policy that combines the advantages of some of the most representative policies already described in the literature. Smart proxies generated by SmartWS can also encapsulate adapters to bridge potential incompatibilities between Web services interfaces and the interfaces expected by clients. Early performance results obtained from experiments carried out on a prototype SmartWS implementation support preliminary guidelines for choosing different server-selection policies.