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Maintaining consistency between loosely coupled services in the presence of timing constraints and validation errors

Lookup NU author(s): Dr Carlos Molina-Jimenez, Emeritus Professor Santosh Shrivastava


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Loose coupling is often cited as a defining characteristic of service-oriented architectures. Interactions between services take place via messages in an asynchronous environment where communication and processing delays can be unpredictable; further, interacting parties are not required to be on-line at the same time. Despite loose coupling, many service interactions have timing and validation constraints. For example, business interactions that take place using RosettaNet partner interface processes (PIPs) such as request price and availability, request purchase order, notify of invoice, etc. have to meet several timing and message validation constraints. A failure to deliver a valid message within its time constraint could cause mutually conflicting views of an interaction. For example, one party can regard it as timely whilst the other party regards it as untimely, leading to application level inconsistencies. The paper describes how business interactions, such as PIPs can be wrapped by simple handshake synchronisation protocols to provide bilateral consistency, thereby simplifying the task of coordinating peer-to-peer business processes. © 2006 IEEE.

Publication metadata

Author(s): Molina-Jimenez C, Shrivastava S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Fourth IEEE European Conference on Web Services (ECOWS)

Year of Conference: 2006

Pages: 148-157

Publisher: IEEE


DOI: 10.1109/ECOWS.2006.25

Library holdings: Search Newcastle University Library for this item

ISBN: 9780769527376