基于主题的分布式发布订阅消息系统中负载均衡的设计与仿真

ue to the lack of a complete and flexible load balancing mechanism, lots of distributed publish/subscribe systems, especially topic-based ones, fail to deal with massive volumn of data, as well as various business senarios. These distributed publish/subscribe systems have to work with a standalone load balancer, or simply cannot be utilized in some senarios. Based on analysis of key factor of message broker or event broker in the messaging system and research on various kinds of messaging systems as well as related study results, a more flexible mechanism is proposed. Based on the real-time length of waiting queues in message brokers, this mechanism uses two algorithms to accomplish workload balance on the message level.