【摘要】 J2EE集群可提供高可用性和可扩展性服务,J2EE应用服务器的集群性能备受关注。根据J2EE体系结构特征,分层阐述了J2EE集群的关键技术和实现。结合一个在线书店实例,基于JBoss应用服务器量化分析了Web层集群技术的性能。针对高可用性问题,提出了2×n拓扑结构集群机制,实验结果证明该结构能有效降低HTTPSession复制开销,提高系统性能。更多还原

【Abstract】 J2EE clustering can provide high available and scalable services, and the clustering performance of J2EE application server has been paid more attention. J2EE clustering technologies and implementations in different tiers are described according to the archi- tecture of J2EE. By an online bookstore, the clustering performance of JBoss on web tier is quantitatively studied. A 2× n topology architecture is presented on high availability. The result shows that the clustering topology reduce the HTTPSession replication cost and improve the system performance.更多还原