Research on Routing and Self-Configuration Ability of Topic-Based Pub/Sub System

Abstract The event-driven publish/subscribe system decouples event producers from consumers, enhancing scalability and flexibility of distributed system. Event routing and self-configuration are two key issues in this system. A lot of researches have been done on these subjects; however, they seldom combine them together to achieve better performance. This paper proposes a way to system organization, which divides brokers into groups to take advantage of multicast, and uses a forwarding tree to route the events according to subscriptions; meanwhile, to make system self-configured, a procedure is presented to handle nodes lost. It turns out that the efficiency and the robustness of the system are improved.