Study and Design on JGroups Based Multi-Broker-Nodes Model

The model of single-broker-node in distributed computing system has drawbacks like low system robustness and communication efficiency. In this paper, a multi-broker-nodes model, for the purpose of improving reliability of distributed system, is proposed to solve the problem of single node failure which leads to the collapse of the entire system. Furthermore, this paper presents an implementation of the above model which is based on the ReplicatedHashMap component in JGroups. The implementation adopts an implicit nodes approach instead of the conventional explicit one, and sets up an automatic global data buffer updating mechanism, which effectively reduces the frequency of network communicating and improves the performance of distributed systems.