摘要
尽管在J2EE(Java 2platform ,EnterpriseEdition)规范中尚未明确提出与负载平衡相关的公共服务 ,为了提高网络软件的伸缩性 ,在中间件层次上支持负载平衡已成为J2EE应用服务器提供商事实上必须关注的内容 .本文在分析现有的面向J2EE平台的负载平衡技术的基础上 ,提出了一种支持多种负载平衡策略、可灵活定制的负载平衡框架 ,并详细描述了该框架在一个产品化的J2EE应用服务器PKUAS(PekingUniversityApplicationServer)中的实现细节 .
J2EE specifications haven't yet definitely defined any common service which provides load balance.To meliorate the scalability of network software,however,supporting load balance at middleware level has become an important issue which should be focused on by all J2EE application server providers.In this paper,we first analyze load-balance related technologies currently used on J2EE platforms.After that,we present a flexible and customizable load balancing framework which supports several load balancing strategies and describe the implementing details of the framework on a J2EE application server PKUAS.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2004年第F12期180-184,共5页
Acta Electronica Sinica
基金
国家重点基础研究发展规划项目计划 (973计划 ) (No 2 0 0 2CB31 2 0 0 3)
国家自然科学基金 (No 60 1 2 52 0 6
No 60 1 0 30 0 1
No 60 30 30 0 4 )
国家高技术研究发展计划 (863计划 ) (No 2 0 0 4AA1 1 2 0 70 )
关键词
负载平衡
中间件
J2EE
EJB
load balance
middleware
J2EE(Java 2 platform,enterprise edition)
EJB(enterprise Java beans)
