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1. 发明授权

US6014686A Apparatus and methods for highly available directory services in the distributed computing environment 失效
标题翻译：在分布式计算环境中高可用性目录服务的设备和方法
公开(公告)号：US6014686A
公开(公告)日：2000-01-11
申请号：US880094
申请日：1997-06-20
申请人： Elmootazbellah Nabil Elnozahy , Vivek Ratan , Mark Edward Segal
发明人： Elmootazbellah Nabil Elnozahy , Vivek Ratan , Mark Edward Segal
IPC分类号： G06F9/46 , G06F11/00 , G06F11/20 , G06F11/30 , G06F15/16
CPC分类号： G06F11/2041 , G06F11/1482 , G06F11/2071 , G06F11/2097 , G06F9/465 , G06F9/547 , G06F11/2028
摘要： In the Distributed Computing Environment (DCE) standard, availability of directory services is increased by apparatus and methods using agents inserted between requesting clients and servers. By using agents, additional functions are carried out which are not performed in a typical DCE environment. Each agent inserts itself between the requesters and servers by writing over the pointer to the server with information pointing to the agent, thus redirecting requests to themselves. The agent then receives incoming requests and forwards them on to its associated server and other agents. The agent handling requests for the master server is called the "master" agent and the agents handling requests for replica servers are "replica" agents. The agents make sure requests are performed before replying to the original requester. Agents also monitor themselves. If a master agent crashes, the remaining agents elect a new master agent. If a replica agent crashes the master agent excludes the agent from further communications. The apparatus and methods provide a highly available and robust directory server.
摘要翻译：在分布式计算环境（DCE）标准中，使用插入请求的客户端和服务器之间的代理的设备和方法来增加目录服务的可用性。通过使用代理，执行在典型的DCE环境中不执行的附加功能。每个代理程序通过将指向代理的信息写入服务器的指针，将自身插入请求者和服务器之间，从而将请求重定向到自己。然后，代理接收传入的请求并将其转发到其关联的服务器和其他代理。处理对主服务器的请求的代理称为“主”代理，处理对副本服务器的请求的代理是“副本”代理。代理人在回复原始请求者之前确保执行请求。代理商也监控自己。如果主代理程序崩溃，其余代理将选择一个新的主代理程序。如果副本代理程序崩溃，则主代理程序将不再进一步通信。该设备和方法提供了高可用性和强大的目录服务器。

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