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    • 6. 发明授权
    • Distributed virtual web cache implemented entirely in software
    • 分布式虚拟Web缓存完全用软件实现
    • US06760756B1
    • 2004-07-06
    • US09598546
    • 2000-06-21
    • Scott H. DavisDaniel J. DietterichPaul D. AsselinGerard R. PlouffePhillip John Romine
    • Scott H. DavisDaniel J. DietterichPaul D. AsselinGerard R. PlouffePhillip John Romine
    • G06F1300
    • G06F17/30902Y10S707/99931
    • A method and system are provided for optimizing the local caching of one or more data components available from a server node. Each of plural nodes connected to a local area network is provided with a locally physically present cache. Each of the caches of at least some of the plurality of nodes are linked together into a single virtual cache. A particular one of the nodes is designated as a repository node for persistently storing a particular data component and for providing a copy of the particular data component to other referencing nodes of the plurality of nodes which lack, but which desire to access, the particular data component. Designation of the particular node as the repository node is unchanged solely by providing a copy of the particular data component to one of the referencing nodes that desires to access the particular data component. The repository function of a node for a particular data component is relatively static. For instance, assume that a first referencing node obtains from the repository node a copy of the particular data component and performs a group of one or more access operations on the copy of the data component. If another referencing node lacks a copy of, but desires to access, the particular data component, a copy of the particular data component is provided from the repository node to the other referencing node. One of the nodes may be designated as a monitor node for the particular data component. The monitor node responds to requests by each referencing node to identify the repository node of the particular data component by providing the identity of the particular node which serves as the repository node for the particular data component.
    • 提供了一种用于优化从服务器节点可用的一个或多个数据组件的本地缓存的方法和系统。 连接到局域网的多个节点中的每一个被提供有本地物理存在的高速缓存。 多个节点中的至少一些节点的每个缓存被链接在一起成为单个虚拟高速缓存。 节点中的特定节点被指定为用于持久存储特定数据组件的存储库节点,并且用于将特定数据组件的副本提供给多个节点中的其他参考节点,该节点缺少但希望访问特定数据 零件。 通过将特定数据组件的副本提供给希望访问特定数据组件的引用节点之一,将特定节点指定为存储库节点。 用于特定数据组件的节点的存储库功能是相对静态的。 例如,假设第一引用节点从存储库节点获得特定数据组件的副本,并对数据组件的副本执行一组或多个访问操作。 如果另一个引用节点缺少特定数据组件的副本,但希望访问特定数据组件,则从存储库节点向另一个引用节点提供特定数据组件的副本。 可以将其中一个节点指定为特定数据组件的监视器节点。 监视器节点通过提供用作特定数据组件的存储库节点的特定节点的标识来响应每个引用节点的请求来识别特定数据组件的存储库节点。
    • 10. 发明授权
    • Internet-based shared file service with native PC client access and semantics and distributed access control
    • 基于Internet的共享文件服务,具有本机PC客户端访问和语义以及分布式访问控制
    • US07136903B1
    • 2006-11-14
    • US09704050
    • 2000-11-01
    • Robert S. PhillipsScott H. DavisDaniel J. DietterichScott E. NymanDavid Porter
    • Robert S. PhillipsScott H. DavisDaniel J. DietterichScott E. NymanDavid Porter
    • G06F15/16G06F15/167G06F7/00H04L9/00
    • G06F17/30067G06F17/30861
    • A multi-user file storage service and system enable each user of a pre-subscribed user group to communicate with a remote file server node via a wide area network and to access the files of the file group via the respective client node. More than one user of the pre-subscribed user group is permitted to access the file group at the remote file server node simultaneously. Integrity of the files at the remote file server node are maintained by controlling each access to each file at the remote file server node so that each access to files at the remote file server is performed, if at all, on a respective portion of each file as most recently updated at the remote file server node. Additionally, an encrypted key is transferred from the file server node to a particular client node via a secure channel. The encrypted key uses an encryption function and a decryption function not known locally at the remote file server. Furthermore, both privileged access control rights and file sharing mode access control to a particular file of the group of files are delegated to one or more distributed nodes other than the remote file server node which provides the data.
    • 多用户文件存储服务和系统使得预订用户组的每个用户能够经由广域网与远程文件服务器节点通信,并且经由相应的客户端节点访问文件组的文件。 允许预订用户组的多个用户同时访问远程文件服务器节点上的文件组。 通过控制对远程文件服务器节点上每个文件的访问来维护远程文件服务器节点上的文件的完整性,以便在每个文件的相应部分执行对远程文件服务器上的文件的每次访问 最近在远程文件服务器节点更新。 此外,加密密钥通过安全信道从文件服务器节点传送到特定的客户端节点。 加密密钥使用在远程文件服务器本地不知道的加密功能和解密功能。 此外,对提供数据的远程文件服务器节点以外的一个或多个分布式节点,委托给该组文件的特定文件的特权访问控制权和文件共享模式访问控制。