摘要： 单点登录(SSO)可以消除多个应用服务系统之间的重复认证过程，但会加重认证负载，引起单点失效的风险，导致服务中断。针对上述问题，提出具有集群功能的单点登录系统，将用户登录请求分发到不同的单点登录服务器，解决单个单点登录服务器负担过重的问题，增强系统运行的稳定性。

关键词: 单点登录, 单点失效, 集中身份验证服务器, 集群

Abstract: Single Sign-On(SSO) can avoid the repetitive authentication processes during accesses to multiple application systems. However, implementing SSO will gather the burden of processing authentication as well as take the risk of single location invalidation even the whole service may be interrupted. Aiming at above problems, this paper proposes an SSO system with clusetering function. It delivers users sign requests to different SSO servers, reduces its loads, and increases reliabilities of the system.

Key words: Single Sign-On(SSO), single location invalidation, Central Authentication Service(CAS), cluster

中图分类号: 

• TP311