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Achieving availability and scalability while providing service guarantees such as in-order, gapless delivery is essential for deploying publish/subscribe messaging middleware in wide area networks. Scalability often requires a publish/subscribe system to propagate subscription information and perform content matching across the network. Existing subscription propagation algorithms do not support in-order,...
This paper presents congestion control mechanisms for reliable and scalable message-oriented middleware following the publish/ subscribe communication model. We identify the key requirements of congestion control in this environment, how it differs from congestion control for the Internet, and propose a combination of two congestion control mechanisms, (1) driven by a publisher hosting broker (PDCC),...
Subscription propagation enables efficient content-based routing in publish/subscribe systems and is a challenging problem when it is required to support reliable delivery in networks with redundant routes. We have designed a generic model and a highly-asynchronous algorithm accomplishing these goals. Existing algorithms can be interpreted as different encodings and optimizations of the generic algorithm...
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