On-demand Replication for High Availability in Content-based Publish/Subscribe Overlays

Young Yoon, Vinod Muthusamy, and Hans-Arno Jacobsen.

University of Toronto, 2010.
Pages 1-28.

Abstract

Content-based publish/subscribe overlays o®er a scalable mes- saging substrate for various event-based distributed systems. In an enter- prise environment where service level agreements are strictly enforced, maintaining high availability of the broker overlay is critical. To meet this requirement, protocols are developed to replace or load-balance a broker that misbehaves|perhaps due to failure, congestion, or peri- odic maintenance|with a new broker in a running system. The key to our techniques is distributed replication of routing information on an adaptively deployed new broker which serves reliable re-route or alter- native paths for publication messages. Our techniques focuses on avoid- ing lengthy disruption of messaging service, and supporting consistency properties on publication delivery via the replica.

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Tags: content-based publish/subscribe, cloud computing, replication, high availability

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