Forwarding Web Service Requests To A Single Service Instance in Service Oriented Networking

Service providers within an enterprise network are often governed by client service contracts (CSC) that specify, among other constraints, the rate at which a particular service instance may be accessed. The service can be accessed via multiple points in a proxy tier configuration. The CSC and thus the rate specified have to be collectively respected by all the middleware appliances. The appliances locally shape the service requests to respect the global contract. Investigation is done in the case where the CSC limits the rate to a service to X requests with an enforcement/observation interval of T seconds. This paper extends, and investigates the Credit-based Algorithm in a production level enterprise network setting. CBA is a decentralized algorithm for service traffic shaping in middleware appliances.