An Architecture for Dynamic Web Service Provisioning Using Peer-to-Peer Networks

Grid computing has made it possible for users to create complex applications by combining globally distributed data and analysis components and deploy them on geographically distributed resources for execution. Introduction of ad-hoc Virtual Organizations based on on-demand service provisioning further enhances this architectural concept. Job-based paradigms or reliance on relatively static UDDI lead to a failure in offering the complete dynamism of a heterogeneous distributed Grid. A possible alternative is the use of dynamic peer-to-peer (P2P) techniques within a Web Service based Grid to introduce the ability of the network to adapt to resource volatility already established in P2P-based content-delivery models. In this paper, we present the architecture of a demand-driven Web Service deployment framework that allows sharing of data and computing capacity using P2P technology as its backbone. We focus on various issues such as resource availability, scalability and abstraction. Demand-driven resource allocation is based on request parameters and availability of the resources to create the basis for a fully dynamic virtual market place of computational resources.