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    • 7. 发明授权
    • Distributed storage management system having a cache server and method
therefor
    • 具有缓存服务器的分布式存储管理系统及其方法
    • US5940594A
    • 1999-08-17
    • US902285
    • 1997-07-29
    • Seifu AliThomas G. BurketTawei HuGerald Edward KozinaThomas S. Lee
    • Seifu AliThomas G. BurketTawei HuGerald Edward KozinaThomas S. Lee
    • G06F17/30G06F15/00
    • G06F17/30067
    • The present invention is directed to a method and system for storing and managing objects, such as binary large objects (blobs) in a digital library system which includes a plurality of clients, an object server for storing an object, a cache server for storing an copy of the object, and a centralized server for storing information identifying the object as being stored in the object server and associating one or more of the clients with the cache server, in which one of the clients, as a requesting client, requests retrieval of an object, a copy of the requested object is sent from the cache server to the requesting client if the object is stored in said cache server, and a copy of said object is sent from the object server to said requesting client if the object is not stored in the cache server; and a copy of the requested object is sent from the object server to the cache server after the object server sends the object to the client, in which the object sent to the client is made available to the client regardless of whether sending of the copy of the object to the cache server is completed.
    • 本发明涉及一种用于在数字图书馆系统中存储和管理诸如二进制大对象(blob)的对象的方法和系统,该数字图书馆系统包括多个客户端,用于存储对象的对象服务器,用于存储对象的高速缓存服务器 对象的副本以及用于存储标识被存储在对象服务器中的对象的信息并将一个或多个客户端与高速缓存服务器相关联的集中式服务器,其中作为请求客户端的客户端之一请求检索 如果对象存储在所述缓存服务器中,则所请求对象的副本从缓存服务器发送到请求客户端,并且如果对象不是,则将对象服务器的副本从对象服务器发送到所述请求客户端 存储在缓存服务器中; 并且在对象服务器将对象发送到客户端之后,将所请求的对象的副本从对象服务器发送到缓存服务器,其中发送给客户端的对象可用于客户端,而不管是否发送副本 缓存服务器的对象完成。