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公开(公告)号：US6049809A
公开(公告)日：2000-04-11
申请号：US739948
申请日：1996-10-30
CPC分类号： G06F17/30212 , H04L67/1095 , Y10S707/99953 , Y10S707/99954
摘要： A system and method of efficiently replicating data structures in a distributed system of replicas. Each replica in the distributed system maintains a cursor indicative of the extent to which other replicas in the system are consistent with one another. By examining the information in its cursor, a destination replica requesting replication from a source replica is able to determine the extent to which it has been made consistent with that source replica via indirect paths, thus potentially improving the starting point of replication. The source replica similarly examines its cursor to potentially improve the starting point of replication with respect to the starting point requested by the destination replica. In this manner, redundant information transmitted from a source replica when replicating a destination replica is reduced. The reduction in the amount of transmitted replication data is particularly appreciable when the replication topology of the system is changed such as by adding a new connection between existing replicas or by adding a new replica to the system.
摘要翻译： 在复制品的分布式系统中有效地复制数据结构的系统和方法。 分布式系统中的每个副本都保留一个光标，指示系统中其他副本彼此一致的程度。 通过检查其游标中的信息，从源副本请求复制的目标副本能够通过间接路径确定其与该源副本一致的程度，从而潜在地改善复制的起始点。 源副本类似地检查其游标以相对于目的地副本请求的起始点潜在地改进起始点。 以这种方式，减少了在复制目的地复本时从源副本发送的冗余信息。 当系统的复制拓扑发生变化时，例如通过在现有副本之间添加新连接或通过向系统添加新副本，传输的复制数据量的减少特别明显。
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公开(公告)号：US07814499B2
公开(公告)日：2010-10-12
申请号：US11275116
申请日：2005-12-12
申请人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
发明人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
IPC分类号： G06F9/44
CPC分类号： G06F9/54 , G06F17/30215
摘要： A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
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公开(公告)号：US07200847B2
公开(公告)日：2007-04-03
申请号：US10154014
申请日：2002-05-23
申请人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
发明人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
IPC分类号： G06F9/46
CPC分类号： G06F9/54 , G06F17/30215
摘要： A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
摘要翻译： 一种用于在分布式计算机系统中加速复制至少一个指定对象到副本的系统和方法。 源副本的源对象确定它具有通过分布式系统传播的紧急更改，并在紧急更改的源副本上通知复制设备。 该设施从该对象提取或提供变更信息，并且源副本将表示该更改的信息传达到目的地副本。 目标副本上的复制工具将更改信息提供给目标副本对象，该对象使用该信息使其自身与源副本对象一致。
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公开(公告)号：US06457053B1
公开(公告)日：2002-09-24
申请号：US09157772
申请日：1998-09-21
IPC分类号： G06F1516
CPC分类号： H04L61/2061 , H04L29/12283 , H04L67/10 , H04L69/40
摘要： A system for multi-master unique identifier allocation comprises a server for allocating pools of identifiers to requesting servers and at least one server for requesting pools of identifiers and allocating individual identifiers as necessary. A single master server allocates “pools” of unique identifiers to network servers upon request. The network servers in turn allocate unique identifiers from their pool as necessary when the server generates new system objects. When a network server's pool of unique identifiers is nearly depleted, the network server requests an additional pool of identifiers from the master server.
摘要翻译： 用于多主机唯一标识符分配的系统包括用于向请求服务器分配标识符池的服务器和用于请求标识符池的至少一个服务器，并且根据需要分配单独的标识符。 单个主服务器根据请求向网络服务器分配唯一标识符的“池”。 当服务器生成新的系统对象时，网络服务器根据需要从其池中分配唯一的标识符。 当网络服务器的唯一标识符池几乎耗尽时，网络服务器从主服务器请求一个额外的标识符池。
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公开(公告)号：US07788678B2
公开(公告)日：2010-08-31
申请号：US11688760
申请日：2007-03-20
申请人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
发明人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
CPC分类号： G06F9/54 , G06F17/30215
摘要： A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
摘要翻译： 一种用于在分布式计算机系统中加速复制至少一个指定对象到副本的系统和方法。 源副本的源对象确定它具有通过分布式系统传播的紧急更改，并在紧急更改的源副本上通知复制设备。 该设施从该对象提取或提供变更信息，并且源副本将表示该更改的信息传达到目的地副本。 目标副本上的复制工具将更改信息提供给目标副本对象，该对象使用该信息使其自身与源副本对象一致。
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6.发明授权
公开(公告)号：US5968121A
公开(公告)日：1999-10-19
申请号：US910412
申请日：1997-08-13
申请人： Keith W. Logan , Pradyumna K. Misra , Paul J. Leach , Clifford P. Van Dyke , Dave D. Straube , Arnold S. Miller
发明人： Keith W. Logan , Pradyumna K. Misra , Paul J. Leach , Clifford P. Van Dyke , Dave D. Straube , Arnold S. Miller
CPC分类号： H04L29/12047 , H04L29/12009 , H04L41/0893 , H04L41/12 , H04L61/15 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1021 , H04L67/16 , H04L67/18 , H04L41/0233 , H04L67/1095 , H04L69/329
摘要： A network directory and naming service include fields for identifying instances of network resources and other objects by both logical and topological grouping. This combination of information facilitates automated efficient decision making with regard to replication of resources and updating the replicas in response to changes. The combination of logical and topological identification for resources also facilitates selection of a close replica in instances where a client requests access to a resource, such as a server, for which communicatively local and remote instances exist.
摘要翻译： 网络目录和命名服务包括用于通过逻辑和拓扑分组来标识网络资源和其他对象的实例的字段。 信息的这种组合促进了关于资源的复制和响应于变化来更新副本的自动化的有效决策。 资源的逻辑和拓扑识别的组合还有助于在客户端请求访问诸如服务器的资源的实例中选择紧密副本，对于通信本地和远程实例存在的资源。
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公开(公告)号：US07430744B2
公开(公告)日：2008-09-30
申请号：US11408654
申请日：2006-04-21
申请人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
发明人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
IPC分类号： G06F9/46
CPC分类号： G06F9/54 , G06F17/30215
摘要： A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
摘要翻译： 一种用于在分布式计算机系统中加速复制至少一个指定对象到副本的系统和方法。 源副本的源对象确定它具有通过分布式系统传播的紧急更改，并在紧急更改的源副本上通知复制设备。 该设施从该对象提取或提供变更信息，并且源副本将表示该更改的信息传达到目的地副本。 目标副本上的复制工具将更改信息提供给目标副本对象，该对象使用该信息使其自身与源副本对象一致。
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公开(公告)号：US06412017B1
公开(公告)日：2002-06-25
申请号：US08673929
申请日：1996-07-01
申请人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
发明人： Dave D. Straube , Aaron M. Contorer , Arnold S. Miller , Balan S. Raman , Pradyumna K. Misra , Michael R. C. Seaman
IPC分类号： G06F946
CPC分类号： G06F9/54 , G06F17/30215
摘要： A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
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