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1. 发明申请

US20090150536A1 Application layer congestion control 审中-公开
标题翻译：应用层拥塞控制
公开(公告)号：US20090150536A1
公开(公告)日：2009-06-11
申请号：US11951328
申请日：2007-12-05
申请人： Alastair Wolman , John Dunagan , Johan Ake Fredrick Sundstrom , Richard Austin Clawson , David Pettersson Rickard
发明人： Alastair Wolman , John Dunagan , Johan Ake Fredrick Sundstrom , Richard Austin Clawson , David Pettersson Rickard
IPC分类号： G06F15/173
CPC分类号： H04L67/1002 , H04L67/1012 , H04L67/1034 , H04L69/40
摘要： A method of managing congestion within a request-response system is disclosed. The method includes determining a response time that is directly or indirectly indicative of how long it takes a back end system to process a request received from a front end system and return a corresponding response. The response time is compared to a threshold criterion. A determination is made, based at least in part on the comparison, that the back end system is becoming congested with requests from the front end system. The front end system is adjusted so as to at least temporarily reduce the number of requests provided to the back end system by the front end system.
摘要翻译：公开了一种在请求 - 响应系统内管理拥塞的方法。该方法包括确定响应时间，其直接或间接指示后端系统处理从前端系统接收到的请求所需的时间并返回相应的响应。将响应时间与阈值标准进行比较。至少部分地基于比较来确定后端系统正在变得拥有来自前端系统的请求的拥塞。前端系统被调整为至少暂时减少由前端系统提供给后端系统的请求数量。

2. 发明申请

US20090144404A1 LOAD MANAGEMENT IN A DISTRIBUTED SYSTEM 审中-公开
标题翻译：分布式系统中的负载管理
公开(公告)号：US20090144404A1
公开(公告)日：2009-06-04
申请号：US11949777
申请日：2007-12-04
申请人： Alastair Wolman , John Dunagan , Johan Ake Fredrick Sundstrom , Richard Austin Clawson , David Pettersson Rickard
发明人： Alastair Wolman , John Dunagan , Johan Ake Fredrick Sundstrom , Richard Austin Clawson , David Pettersson Rickard
IPC分类号： G06F15/173
CPC分类号： G06F9/5033 , G06F9/5083
摘要： A technique for load management in a distributed system that includes multiple physical nodes is disclosed. The load management technique includes mutably assigning a number of virtual nodes to each physical node of the multiple physical nodes. A total number of virtual nodes assigned to the multiple physical nodes is maintained substantially unaltered in spite of any alterations made in the number of virtual nodes assigned to each physical node of the multiple physical nodes.
摘要翻译：公开了一种包含多个物理节点的分布式系统中的负载管理技术。负载管理技术包括将多个虚拟节点可变地分配给多个物理节点的每个物理节点。尽管分配给多个物理节点的每个物理节点的虚拟节点的数量发生任何改变，但分配给多个物理节点的虚拟节点的总数量基本上保持不变。

3. 发明授权

US08140478B2 Commit rate management with decoupled commit operations 有权
标题翻译：具有解耦提交操作的提交率管理
公开(公告)号：US08140478B2
公开(公告)日：2012-03-20
申请号：US12362169
申请日：2009-01-29
申请人： Alastair Wolman , John Dunagan , John Carleton McCullough , Bruce W. Copeland , Jeremy L. Dewey
发明人： Alastair Wolman , John Dunagan , John Carleton McCullough , Bruce W. Copeland , Jeremy L. Dewey
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30377
摘要： Consistency is managed among data operations by coalescing commit operations, adjusting a commit rate to optimize latency, and converging to fairness across servers. Write operations representing a change to data stored by one or more of a plurality of computing devices are received in succession by, for example, a cloud computing service. A state of a plurality of tracking objects is adjusted to indicate whether the change in data has been provided to the computing devices and whether the change in data has been acknowledged by the computing devices. Changes to the same data are coalesced such that only the most recent change is provided to the computing devices for storage. In some embodiments, the commit rate is adjustable such that the commit rate decreases quickly but increases slowly based on measured latencies.
摘要翻译：通过合并提交操作，调整提交速率来优化延迟并在服务器之间融合到公平性，在数据操作之间管理一致性。代表对由多个计算设备中的一个或多个计算设备存储的数据的改变的写操作由例如云计算服务连续接收。调整多个跟踪对象的状态以指示数据的改变是否已经被提供给计算设备，以及数据的改变是否已被计算设备确认。对相同数据的更改合并，使得只有最近的更改提供给计算设备才能进行存储。在一些实施例中，提交速率是可调节的，使得提交速率快速降低，但是基于测量的延迟而缓慢增加。

4. 发明授权

US07984335B2 Test amplification for datacenter applications via model checking 有权
标题翻译：通过模型检查测试数据中心应用的扩展
公开(公告)号：US07984335B2
公开(公告)日：2011-07-19
申请号：US12052655
申请日：2008-03-20
申请人： Atul Adya , Alastair Wolman , John Dunagan , David Andrew Schultz
发明人： Atul Adya , Alastair Wolman , John Dunagan , David Andrew Schultz
IPC分类号： G06F11/00
CPC分类号： G06F11/3676 , G06F11/3688
摘要： Systems and methods are provided to determine execution errors in distributed computing environments. In an illustrative implementation, a computing environment comprises a test amplification engine and at least one instruction set to instruct the test amplification engine to process data representative of a request to perform a test for one or more execution errors in an distributed computing environment according to a selected execution error testing paradigm dependent on identifying critical sources of non-determinism for execution within the exemplary distributed computing environment. In an illustrative operation, a participating distributed computing environment operator (e.g., programmer) can cooperate with the test amplification engine to select an existing unit or integration test, instrument sources of non-determinism and to select one or more instrumentations for the unit or integration test for execution in the exemplary distributed computing environment to elicit the occurrence of one or more execution errors.
摘要翻译：提供系统和方法来确定分布式计算环境中的执行错误。在说明性实现中，计算环境包括测试放大引擎和至少一个指令集，以指示测试放大引擎处理表示在分布式计算环境中对一个或多个执行错误进行测试的请求的数据，所述执行错误根据选择的执行错误测试范例取决于确定在示例性分布式计算环境内执行的非确定性的关键来源。在说明性操作中，参与分布式计算环境操作者（例如，程序员）可以与测试放大引擎配合以选择现有的单元或集成测试，非确定性的仪器源，并为单元或集成选择一个或多个仪器测试在示例性分布式计算环境中执行以引发一个或多个执行错误的发生。

5. 发明申请

US20100191712A1 COMMIT RATE MANAGEMENT WITH DECOUPLED COMMIT OPERATIONS 有权
标题翻译：提交费用管理与解除委托操作
公开(公告)号：US20100191712A1
公开(公告)日：2010-07-29
申请号：US12362169
申请日：2009-01-29
申请人： Alastair Wolman , John Dunagan , John Carleton McCullough , Bruce W. Copeland , Jeremy L. Dewey
发明人： Alastair Wolman , John Dunagan , John Carleton McCullough , Bruce W. Copeland , Jeremy L. Dewey
IPC分类号： G06F7/00
CPC分类号： G06F17/30377
摘要： Consistency is managed among data operations by coalescing commit operations, adjusting a commit rate to optimize latency, and converging to fairness across servers. Write operations representing a change to data stored by one or more of a plurality of computing devices are received in succession by, for example, a cloud computing service. A state of a plurality of tracking objects is adjusted to indicate whether the change in data has been provided to the computing devices and whether the change in data has been acknowledged by the computing devices. Changes to the same data are coalesced such that only the most recent change is provided to the computing devices for storage. In some embodiments, the commit rate is adjustable such that the commit rate decreases quickly but increases slowly based on measured latencies.
摘要翻译：通过合并提交操作，调整提交速率来优化延迟并在服务器之间融合到公平性，在数据操作之间管理一致性。代表对由多个计算设备中的一个或多个计算设备存储的数据的改变的写操作由例如云计算服务连续接收。调整多个跟踪对象的状态以指示数据的改变是否已经被提供给计算设备，以及数据的改变是否已被计算设备确认。对相同数据的更改合并，使得只有最近的更改提供给计算设备才能进行存储。在一些实施例中，提交速率是可调节的，使得提交速率快速降低，但是基于测量的延迟而缓慢增加。

6. 发明申请

US20070027974A1 Online service monitoring 审中-公开
标题翻译：在线服务监控
公开(公告)号：US20070027974A1
公开(公告)日：2007-02-01
申请号：US11194891
申请日：2005-08-01
申请人： Juhan Lee , John Dunagan , Alastair Wolman , Chad Verbowski , Stephen Lovett
发明人： Juhan Lee , John Dunagan , Alastair Wolman , Chad Verbowski , Stephen Lovett
IPC分类号： G06F15/173
CPC分类号： H04L41/5009 , H04L41/0681 , H04L41/5051 , H04L43/0805 , H04L43/0817 , H04L43/0852 , H04L43/0864 , H04L43/16
摘要： A status notification method and facility is provided for use with a service chain processing a request for a service. The service chain can include multiple computer nodes, and the method includes dynamically creating the service chain for processing the request, and guaranteeing agreement, on at least two of the nodes of the service chain, about the status of the processing of the request. The method can also include saving detailed operational data logs in response to determining that a failure in processing the request has occurred. When a given node in the service chain determines that failure has occurred, agreement about the failure can be propagated throughout the service chain. Also, conditional logging of detailed operational data can minimize the amount of operational data transmitted over a network and saved to a data repository.
摘要翻译：提供状态通知方法和设施用于处理服务请求的服务链。服务链可以包括多个计算机节点，并且该方法包括动态地创建用于处理该请求的服务链，并且在服务链的至少两个节点上保证关于请求的处理状态的协议。该方法还可以包括保存详细的操作数据日志以响应于确定处理该请求的失败已经发生。当服务链中的给定节点确定发生故障时，关于故障的协议可以在整个服务链中传播。此外，详细操作数据的条件记录可以最小化通过网络传输并保存到数据存储库的操作数据量。

7. 发明申请

US20050083834A1 Method for providing guaranteed distributed failure notification 有权
标题翻译：提供有保证的分布式故障通知的方法
公开(公告)号：US20050083834A1
公开(公告)日：2005-04-21
申请号：US10686658
申请日：2003-10-17
申请人： John Dunagan , Nicholas Harvey , Michael Jones , Dejan Kostic , Marvin Theimer , Alastair Wolman
发明人： John Dunagan , Nicholas Harvey , Michael Jones , Dejan Kostic , Marvin Theimer , Alastair Wolman
IPC分类号： G06F11/00 , G01R31/08 , G06F11/07 , G06F15/00 , H04L12/18 , H04L12/24 , H04L12/56 , H04L29/06 , H04L29/08 , H04L29/14
CPC分类号： H04L45/16 , G06F11/0709 , G06F11/0772 , G06F11/0784 , H04L12/1895 , H04L29/06 , H04L41/06 , H04L45/02 , H04L45/04 , H04L45/48 , H04L67/26 , H04L69/329
摘要： A guaranteed distributed failure notification method is described, wherein a failure notification (FN) facility allows applications using the facility to create FN groups to which the application associates an application state. The application registers failure handlers with the FN facility on nodes in the FN group; each failure handler is associated with a specific FN group. When, on a given node, the FN facility learns of a failure in the FN group, the facility executes the associated failure handler on that node. System failures detected by the application are signaled to other FN group members using the facility. The facility detects system failures that occur in an overlay network on which the facility is implemented, and signals a failure notification to the other FN group members.
摘要翻译：描述了保证的分布式故障通知方法，其中故障通知（FN）设施允许使用该设施的应用创建应用程序将应用程序状态与之相关联的FN组。应用程序在FN组中的节点上注册FN设备的故障处理程序; 每个故障处理程序与特定FN组相关联。当FN给定节点在FN组中发现故障时，设备将在该节点上执行关联的故障处理程序。使用该设施向应用程序检测到的系统故障发信号通知其他FN组成员。该设施检测在实施设施的覆盖网络中发生的系统故障，并向其他FN组成员发出故障通知。

8. 发明申请

US20050086469A1 Scalable, fault tolerant notification method 审中-公开
标题翻译：可扩展的容错通知方法
公开(公告)号：US20050086469A1
公开(公告)日：2005-04-21
申请号：US10686620
申请日：2003-10-17
申请人： John Dunagan , Nicholas Harvey , Michael Jones , Marvin Theimer , Alastair Wolman
发明人： John Dunagan , Nicholas Harvey , Michael Jones , Marvin Theimer , Alastair Wolman
IPC分类号： H04L9/00 , H04L12/18
CPC分类号： H04L12/1877 , H04L12/1854 , H04L12/1859
摘要： A scalable, fault-tolerant, federated event notification method is described, wherein clients express interest in a topic by subscribing, and published event notifications are delivered to all current topic-subscribers. Event notifications are disseminated by a multicast tree that does not require participation by unwilling nodes. The multicast tree is constructed so that nodes belonging to the organization owning the tree do not rely on nodes outside the organization to forward message traffic. Event notifications are delivered using redundant tree-based application-level multicast to ensure reliable delivery.
摘要翻译：描述了可扩展的，容错的联合事件通知方法，其中客户端通过订阅来表达对主题的兴趣，并且将已发布的事件通知传递给所有当前主题订户。事件通知由不需要参与的多播树传播。组播树的构造使得属于拥有该树的组织的节点不依赖于组织外部的节点来转发消息流量。事件通知使用冗余的基于树的应用程序级多播来确保可靠的传送。

9. 发明申请

US20090240987A1 TEST AMPLIFICATION FOR DATACENTER APPLICATIONS VIA MODEL CHECKING 有权
标题翻译：通过模型检查进行试验放大
公开(公告)号：US20090240987A1
公开(公告)日：2009-09-24
申请号：US12052655
申请日：2008-03-20
申请人： Atul Adya , Alastair Wolman , John Dunagan , David Andrew Schultz
发明人： Atul Adya , Alastair Wolman , John Dunagan , David Andrew Schultz
IPC分类号： G06F11/00
CPC分类号： G06F11/3676 , G06F11/3688
摘要： Systems and methods are provided to determine execution errors in distributed computing environments. In an illustrative implementation, a computing environment comprises a test amplification engine and at least one instruction set to instruct the test amplification engine to process data representative of a request to perform a test for one or more execution errors in an distributed computing environment according to a selected execution error testing paradigm dependent on identifying critical sources of non-determinism for execution within the exemplary distributed computing environment. In an illustrative operation, a participating distributed computing environment operator (e.g., programmer) can cooperate with the test amplification engine to select an existing unit or integration test, instrument sources of non-determinism and to select one or more instrumentations for the unit or integration test for execution in the exemplary distributed computing environment to elicit the occurrence of one or more execution errors.
摘要翻译：提供系统和方法来确定分布式计算环境中的执行错误。在说明性实现中，计算环境包括测试放大引擎和至少一个指令集，以指示测试放大引擎处理表示在分布式计算环境中对一个或多个执行错误进行测试的请求的数据，所述执行错误根据选择的执行错误测试范例取决于确定在示例性分布式计算环境内执行的非确定性的关键来源。在说明性操作中，参与分布式计算环境操作者（例如，程序员）可以与测试放大引擎配合以选择现有的单元或集成测试，非确定性的仪器源，并为单元或集成选择一个或多个仪器测试在示例性分布式计算环境中执行以引发一个或多个执行错误的发生。

10. 发明授权

US07551552B2 Method for providing guaranteed distributed failure notification 有权
标题翻译：提供有保证的分布式故障通知的方法
公开(公告)号：US07551552B2
公开(公告)日：2009-06-23
申请号：US10686658
申请日：2003-10-17
申请人： John Dunagan , Nicholas J. A. Harvey , Michael B. Jones , Dejan Kostić , Marvin M. Theimer , Alastair Wolman
发明人： John Dunagan , Nicholas J. A. Harvey , Michael B. Jones , Dejan Kostić , Marvin M. Theimer , Alastair Wolman
IPC分类号： H04J1/16
CPC分类号： H04L45/16 , G06F11/0709 , G06F11/0772 , G06F11/0784 , H04L12/1895 , H04L29/06 , H04L41/06 , H04L45/02 , H04L45/04 , H04L45/48 , H04L67/26 , H04L69/329
摘要： A guaranteed distributed failure notification method is described, wherein a failure notification (FN) facility allows applications using the facility to create FN groups to which the application associates an application state. The application registers failure handlers with the FN facility on nodes in the FN group; each failure handler is associated with a specific FN group. When, on a given node, the FN facility learns of a failure in the FN group, the facility executes the associated failure handler on that node. System failures detected by the application are signaled to other FN group members using the facility. The facility detects system failures that occur in an overlay network on which the facility is implemented, and signals a failure notification to the other FN group members.
摘要翻译：描述了有保证的分布式故障通知方法，其中故障通知（FN）设施允许使用该设施的应用创建应用程序将应用程序状态与应用程序状态相关联的FN组。应用程序在FN组中的节点上注册FN设备的故障处理程序; 每个故障处理程序与特定的FN组相关联。当FN给定节点在FN组中发现故障时，设备将在该节点上执行关联的故障处理程序。使用该设施向应用程序检测到的系统故障发信号通知其他FN组成员。该设施检测在实施设施的覆盖网络中发生的系统故障，并向其他FN组成员发出故障通知。

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