Establishing presence within the service-oriented environment

As service oriented architectures continue to gain prominence as a mechanism to realize standards-based, distributed computing paradigms, the ability for traditional implementations to support bandwidth disadvantaged and runtime composition scenarios has been questioned. Traditional approaches leverage centralized registry platforms to enable service discovery functionality, but this inherently introduces the possibility of stale metadata and registry information that does not reflect actual operating conditions. Service presence offers a fresh opportunity to redefine service discovery; while not typically viewed as a crucial element of SOA's runtime discovery solution space, service presence significantly enhances the real-time monitoring of services by introducing an omnipresent mechanism for capturing a service's state. This paper focuses on analyzing and evaluating the feasibility of utilizing peer-to-peer (P2P) approaches to better facilitate service presence and dynamic service discovery through discussion of experimentation conducted using an extensible messaging and presence protocol (XMPP) driven prototype.