专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20130311525A1 IDEMPOTENT COMMAND EXECUTION 审中-公开
标题翻译：认真的命令执行
公开(公告)号：US20130311525A1
公开(公告)日：2013-11-21
申请号：US13471670
申请日：2012-05-15
申请人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Peter Gvozdjak , Balendran Mugundan
发明人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Peter Gvozdjak , Balendran Mugundan
IPC分类号： G06F17/30
CPC分类号： G06F16/2455 , G06F16/2358
摘要： Systems and methods are described that facilitate idempotent execution of commands generated by a client for execution by a database server. Each command transmitted to the server includes a command ID generated by the client. The server attempts to execute each command and subsequently stores the command ID associated therewith in a repository along with an indication of whether the command executed successfully. When a new command is received by the server, it determines if the command ID associated therewith has already been stored in the repository. If the command ID associated with the new command has not already been stored in the repository, then the server executes the new command. If the command ID associated with the new command has already been stored in the repository and a previously-received command associated with the command ID has been executed successfully, then the server will not execute the new command.
摘要翻译：描述了促进由客户机生成的用于数据库服务器执行的命令的幂等执行的系统和方法。发送到服务器的每个命令包括由客户端生成的命令ID。服务器尝试执行每个命令，随后将与其相关联的命令ID与指示是否成功执行的指示一起存储在存储库中。当服务器接收到新的命令时，它确定与其相关联的命令ID是否已经存储在存储库中。如果与新命令相关联的命令ID尚未存储在存储库中，则服务器将执行新命令。如果与新命令相关联的命令ID已经存储在存储库中，并且与命令ID相关联的先前接收到的命令已成功执行，则服务器将不执行新命令。

2. 发明授权

US09239868B2 Virtual session management and reestablishment 有权
标题翻译：虚拟会话管理和重建
公开(公告)号：US09239868B2
公开(公告)日：2016-01-19
申请号：US13527384
申请日：2012-06-19
申请人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Chadwin J. Mumford , Peter Gvozdjak , Balendran Mugundan
发明人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Chadwin J. Mumford , Peter Gvozdjak , Balendran Mugundan
IPC分类号： G06F15/16 , G06F17/30 , H04L29/08 , G06F11/20 , H04L29/14
CPC分类号： G06F17/30566 , G06F11/2023 , G06F11/2097 , H04L67/142 , H04L67/146 , H04L67/148 , H04L69/40
摘要： Systems and methods are described that establish and maintain a virtual session between a client and one or more database servers. A database server establishes a first session with a client wherein establishing the virtual session with the client comprises associating a virtual session identifier (ID) with the first session, generates state information in association with the first session, and stores the state information in a repository in association with the virtual session ID. After the first session fails, a same or different database server establishes a second session with the client wherein establishing the second session with the client comprises receiving the virtual session ID from the client, accesses the state information that was stored in the repository in association with the virtual session ID, and associates the state information with the second session.
摘要翻译：描述了在客户端和一个或多个数据库服务器之间建立和维护虚拟会话的系统和方法。数据库服务器与客户端建立第一会话，其中与客户端建立虚拟会话包括将虚拟会话标识符（ID）与第一会话相关联，生成与第一会话关联的状态信息，并将状态信息存储在存储库与虚拟会话ID相关联。在第一次会话失败之后，相同或不同的数据库服务器与客户端建立第二个会话，其中与客户端建立第二个会话包括从客户端接收虚拟会话ID，与存储在存储库中的状态信息相关联地访问虚拟会话ID，并将状态信息与第二会话相关联。

3. 发明申请

US20130339533A1 VIRTUAL SESSION MANAGEMENT AND REESTABLISHMENT 有权
标题翻译：虚拟会话管理与实施
公开(公告)号：US20130339533A1
公开(公告)日：2013-12-19
申请号：US13527384
申请日：2012-06-19
申请人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Chadwin J. Mumford , Peter Gvozdjak , Balendran Mugundan
发明人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Chadwin J. Mumford , Peter Gvozdjak , Balendran Mugundan
IPC分类号： G06F15/16 , G06F17/30
CPC分类号： G06F17/30566 , G06F11/2023 , G06F11/2097 , H04L67/142 , H04L67/146 , H04L67/148 , H04L69/40
摘要： Systems and methods are described that establish and maintain a virtual session between a client and one or more database servers. A database server establishes a first session with a client wherein establishing the virtual session with the client comprises associating a virtual session identifier (ID) with the first session, generates state information in association with the first session, and stores the state information in a repository in association with the virtual session ID. After the first session fails, a same or different database server establishes a second session with the client wherein establishing the second session with the client comprises receiving the virtual session ID from the client, accesses the state information that was stored in the repository in association with the virtual session ID, and associates the state information with the second session.
摘要翻译：描述了在客户端和一个或多个数据库服务器之间建立和维护虚拟会话的系统和方法。数据库服务器与客户端建立第一会话，其中与客户端建立虚拟会话包括将虚拟会话标识符（ID）与第一会话相关联，生成与第一会话关联的状态信息，并将状态信息存储在存储库与虚拟会话ID相关联。在第一次会话失败之后，相同或不同的数据库服务器与客户端建立第二个会话，其中与客户端建立第二个会话包括从客户端接收虚拟会话ID，与存储在存储库中的状态信息相关联地访问虚拟会话ID，并将状态信息与第二会话相关联。

4. 发明授权

US10936591B2 Idempotent command execution 有权
公开(公告)号：US10936591B2
公开(公告)日：2021-03-02
申请号：US13471670
申请日：2012-05-15
申请人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Peter Gvozdjak , Balendran Mugundan
发明人： Matthew A. Neerincx , Luiz F. Santos , Oleg Ignat , David B. Lomet , Quetzalcoatl Bradley , Raghu Ram , Peter Gvozdjak , Balendran Mugundan
IPC分类号： G06F16/2455 , G06F16/23
摘要： Systems and methods are described that facilitate idempotent execution of commands generated by a client for execution by a database server. Each command transmitted to the server includes a command ID generated by the client. The server attempts to execute each command and subsequently stores the command ID associated therewith in a repository along with an indication of whether the command executed successfully. When a new command is received by the server, it determines if the command ID associated therewith has already been stored in the repository. If the command ID associated with the new command has not already been stored in the repository, then the server executes the new command. If the command ID associated with the new command has already been stored in the repository and a previously-received command associated with the command ID has been executed successfully, then the server will not execute the new command.

5. 发明授权

US07984155B2 Consistent cluster operational data in a server cluster using a quorum of replicas 有权
标题翻译：服务器集群中使用复制数量的一致的集群操作数据
公开(公告)号：US07984155B2
公开(公告)日：2011-07-19
申请号：US12815373
申请日：2010-06-14
申请人： Michael T. Massa , David A. Dion , Raj Das , Rushabh Doshi , David B. Lomet , Gor V. Nishanov , Philip A. Bernstein , Rod N. Gamache , Rohit N. Jain , Sunita V. Nishanov
发明人： Michael T. Massa , David A. Dion , Raj Das , Rushabh Doshi , David B. Lomet , Gor V. Nishanov , Philip A. Bernstein , Rod N. Gamache , Rohit N. Jain , Sunita V. Nishanov
IPC分类号： G06F15/173 , G06F11/00
CPC分类号： G06F17/30575 , G06F11/1425 , G06F11/1471 , G06F11/1479 , G06F11/1482 , G06F11/1662 , G06F11/181 , G06F11/182 , G06F11/2023 , G06F11/2035 , G06F11/2058 , G06F2201/82
摘要： A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica members, which ensures that any new or surviving cluster includes consistent cluster operational data via at least one replica member from the immediately prior cluster. Arbitration provides exclusive ownership by one node of the replica members, including at cluster formation, and when the owning node fails. Arbitration uses a fast mutual exclusion algorithm and a reservation mechanism to challenge for and defend the exclusive reservation of each member. A quorum replica set algorithm brings members online and offline with data consistency, including updating unreconciled replica members, and ensures consistent read and update operations.
摘要翻译：通过至少要求一个节点和副本成员的仲裁复制集来形成和操作集群，来提高服务器集群可用性的方法和系统。副本成员维护集群操作数据。当一个节点拥有大多数副本成员时，集群就会运行，从而确保任何新的或存活的集群通过至少一个来自紧接在前的集群的副本成员包括一致的集群操作数据。仲裁提供复制成员的一个节点的独占所有权，包括在集群形成时以及所有节点出现故障时。仲裁使用快速互斥算法和保留机制来挑战和保护每个成员的独家保留。仲裁复制集算法使成员在线和离线具有数据一致性，包括更新未协调的副本成员，并确保一致的读取和更新操作。

6. 发明授权

US06938084B2 Method and system for consistent cluster operational data in a server cluster using a quorum of replicas 有权
标题翻译：使用复制数量的服务器集群中一致的集群操作数据的方法和系统
公开(公告)号：US06938084B2
公开(公告)日：2005-08-30
申请号：US09895810
申请日：2001-07-02
申请人： Rod Gamache , Michael T. Massa , Sunita Shrivastava , Gor V. Nishanov , David B. Lomet , Philip A. Bernstein , Rohit Jain
发明人： Rod Gamache , Michael T. Massa , Sunita Shrivastava , Gor V. Nishanov , David B. Lomet , Philip A. Bernstein , Rohit Jain
IPC分类号： G06F7/00 , G06F9/50 , G06F11/20 , G06F12/00 , G06F15/16 , G06F15/173 , G06F17/30
CPC分类号： G06F11/182 , G06F11/1425 , G06F11/1482 , G06F11/1662 , G06F11/181 , G06F11/2023 , G06F11/2035
摘要： A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members, independent from the nodes, maintain cluster operational data. A cluster operates when one node possesses a majority of replica members, which ensures that any new or surviving cluster includes consistent cluster operational data via at least one replica member from the immediately prior cluster. Arbitration provides exclusive ownership by one node of the replica members, including at cluster formation, and when the owning node fails. Arbitration uses a fast mutual exclusion algorithm and a reservation mechanism to challenge for and defend the exclusive reservation of each member. A quorum replica set algorithm brings members online and offline with data consistency, including updating unreconciled replica members, and ensures consistent read and update operations.
摘要翻译：通过至少要求一个节点和副本成员的仲裁复制集来形成和操作集群，来提高服务器集群可用性的方法和系统。独立于节点的副本成员维护集群操作数据。当一个节点拥有大多数副本成员时，集群就会运行，从而确保任何新的或存活的集群通过至少一个来自紧接在前的集群的副本成员包括一致的集群操作数据。仲裁提供复制成员的一个节点的独占所有权，包括在集群形成时以及所有节点出现故障时。仲裁使用快速互斥算法和保留机制来挑战和保护每个成员的独家保留。仲裁复制集算法使成员在线和离线具有数据一致性，包括更新未协调的副本成员，并确保一致的读取和更新操作。

7. 发明授权

US6067550A Database computer system with application recovery and dependency handling write cache 失效
公开(公告)号：US6067550A
公开(公告)日：2000-05-23
申请号：US832870
申请日：1997-04-04
申请人： David B. Lomet
发明人： David B. Lomet
IPC分类号： G06F17/00 , G06F17/30
CPC分类号： G06F11/1471 , G06F2201/80 , G06F2201/82 , Y10S707/99933 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： This invention concerns a database computer system and method for making applications recoverable from system crashes. The application state (i.e., address space) is treated as a single object which can be atomically flushed in a manner akin to flushing individual pages in database recovery techniques. To enable this monolithic treatment of the application, executions performed by the application are mapped to logical loggable operations which can be posted to the stable log. Any modifications to the application state are accumulated and the application state is periodically flushed to stable storage using an atomic procedure. The application recovery integrates with database recovery, and effectively eliminates or at least substantially reduces the need for check pointing applications. In addition, optimization techniques are described to make the read, write, and recovery phases more efficient.

8. 发明授权

US5946698A Database computer system with application recovery 失效
标题翻译：数据库计算机系统与应用程序恢复
公开(公告)号：US5946698A
公开(公告)日：1999-08-31
申请号：US814808
申请日：1997-03-10
申请人： David B. Lomet
发明人： David B. Lomet
IPC分类号： G06F17/30
CPC分类号： G06F11/1438 , Y10S707/99953
摘要： This invention concerns a database computer system and method for making applications recoverable from system crashes. The application state (i.e., address space) is treated as a single object which can be atomically flushed in a manner akin to flushing individual pages in database recovery techniques. To enable this monolithic treatment of the application, executions performed by the application are mapped to logical loggable operations which can be posted to the stable log. Any modifications to the application state are accumulated and the application state is flushed from time to time to stable storage using an atomic procedure. Applications are recovered by replaying the logged state transition operations, in the same manner that most database systems replay state transformation operations to recover database pages. This application recovery integrates with database recovery, and effectively eliminates or at least substantially reduces the need for check pointing applications. In addition, optimization techniques are described to make the read, write, and recovery phases more efficient.
摘要翻译：本发明涉及用于使应用从系统崩溃中恢复的数据库计算机系统和方法。应用状态（即，地址空间）被视为单个对象，其可以类似于在数据库恢复技术中刷新单独页面的方式被原子地刷新。为了实现对应用程序的这种单一处理，应用程序执行的执行映射到可以发布到稳定日志的逻辑可记录操作。累积对应用状态的任何修改，并且使用原子程序将应用状态不时刷新到稳定存储。通过重播记录的状态转换操作来恢复应用程序，方式与大多数数据库系统重播状态转换操作以恢复数据库页面相同。该应用程序恢复与数据库恢复集成，并有效地消除或至少大大减少了对检查指向应用程序的需求。此外，描述了优化技术，以使读取，写入和恢复阶段更有效率。

9. 发明授权

US5585793A Order preserving data translation 失效
标题翻译：订单保存数据转换
公开(公告)号：US5585793A
公开(公告)日：1996-12-17
申请号：US258144
申请日：1994-06-10
申请人： Gennady Antoshenkov , David B. Lomet , James C. Murray
发明人： Gennady Antoshenkov , David B. Lomet , James C. Murray
IPC分类号： G06T9/00 , H03M7/30
CPC分类号： G06T9/005 , H03M7/3088
摘要： In a computer system, input strings to be translated are composed of characters selected from a first alphabet. According to a predetermined criterion, a list of sub-strings is selected from the input strings to form entries in a dictionary. The entries of the dictionary are arranged according to a collating order of the first alphabet. An interval including the sub-strings of the input strings is partitioned into an all-inclusive and disjoint set of ranges. The sub-strings of the interval are arranged according to the collating order of the first alphabet, and each sub-strings of a particular range has a common prefix, the common prefix selected from the list of sub-strings. A unique encoding is assigned to each common prefix, the corresponding set of unique encodings composed of characters selected from a second alphabet. The input strings are parsed, one at the time, into a plurality of tokens, each token corresponding to a sub-string selected from the dictionary. In an output string, there is placed for each token, a corresponding one of the set of unique encodings.
摘要翻译：在计算机系统中，要翻译的输入字符串由从第一字母表中选择的字符组成。根据预定标准，从输入字符串中选择一个子串列表，以在字典中形成条目。字典的条目按照第一个字母表的整理顺序排列。包括输入字符串的子串的间隔被划分成一个全包和不相交的范围集合。间隔的子串根据第一字母表的整理顺序排列，特定范围的每个子串具有共同的前缀，从子列表中选择的公用前缀。每个公共前缀分配唯一的编码，由从第二个字母表中选择的字符组成的对应的唯一编码集。将输入字符串一次解析成多个令牌，每个令牌对应于从字典中选择的子串。在输出字符串中，为每个令牌放置一组唯一编码中相应的一个。

10. 发明授权

US5485607A Concurrency-control method and apparatus in a database management system utilizing key-valued locking 失效
标题翻译：利用键值锁定的数据库管理系统中的并发控制方法和装置
公开(公告)号：US5485607A
公开(公告)日：1996-01-16
申请号：US14188
申请日：1993-02-05
申请人： David B. Lomet , Russell J. Green
发明人： David B. Lomet , Russell J. Green
IPC分类号： G06F17/30
CPC分类号： G06F17/30362 , Y10S707/99938
摘要： The concurrency-control mechanisms in a database-management system achieves high concurrency by using a lock-mode set larger than that conventionally employed for multi-granularity locking. In a system of key-valued locking in which locks on key-value ranges are acquired separately from the locks on the key values with which they are associated, the IX lock mode conventionally acquired on a range by update, insert, and delete operations is replaced with three separate lock modes respectively associated with those operations and invoked by them for range locking. In key-valued-locking systems in which ranges are locked commonly with the key-values associated with them, the mode set is further expanded so that each mode represents a different combination of range and key-value locks.
摘要翻译：数据库管理系统中的并发控制机制通过使用大于常规用于多粒度锁定的锁模式来实现高并发性。在键值锁定系统中，键值范围的锁与其关联的键值分开获取锁定，通常通过更新，插入和删除操作在范围上获取的IX锁定模式是替换为分别与这些操作相关联的三个单独的锁定模式，并由它们用于范围锁定。在键值锁定系统中，范围与其相关联的键值通常被锁定，模式集进一步扩展，使得每个模式表示范围和键值锁定的不同组合。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式