Decentralizing Composite Web Services.

Web services make information and software available programmatically via the Internet and may be used as {\em building blocks} for applications. A composite web service is one that is built using multiple component web services. Composite web services are emerging as a programming model of distributed computation applicable to business process. Once its specification has been developed, the composite service may be {\em orchestrated} either using a {\em centralized} engine or in a {\em decentralized} fashion. Decentralized orchestration brings performance benefits, and improves scalability and concurrency. Decentralized orchestration is similar to execution on multi-processors. However standard techniques for automatic parallelization cannot be applied directly to decentralizing composite services. We propose a novel algorithm for automatic parallelization and code partitioning that is applicable to decentralized orchestration of web services. We show how to generate a decentralized web service specification given a specification for centralized orchestration.

By: Mangala Gowri Nanda, Satish Chandra

Published in: RI03006 in 2003


This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.


Questions about this service can be mailed to .