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11. 发明授权

US07702719B1 Methods and apparatus for reducing the number of server interactions in network-based applications using a dual-MVC approach 有权
标题翻译：使用双MVC方法减少基于网络的应用程序中的服务器交互次数的方法和装置
公开(公告)号：US07702719B1
公开(公告)日：2010-04-20
申请号：US09500208
申请日：2000-02-08
申请人： Katherine Betz , Avraham Leff , James Thomas Rayfield
发明人： Katherine Betz , Avraham Leff , James Thomas Rayfield
IPC分类号： G06F15/16
CPC分类号： H04L67/02
摘要： In accordance with a dual-MVC (Model-View-Controller) approach of the invention, the client machine maintains part of the Model, eliminating many round-trips to the server. The invention provides an implementation approach for constructing the frame(s) contained in the client's browser software to allow it to be refreshed locally. The invention addresses development and maintenance by specifying a library of functions that a programmer can use to construct the View and Controller on the client machine. When part of the Model is maintained on the client, the client has the ability to respond to user interaction without paying the performance penalty of continually interacting with the server.
摘要翻译：根据本发明的双MVC（模型 - 视图 - 控制器）方法，客户机维护模型的一部分，消除了对服务器的多次往返。本发明提供了一种用于构建客户端浏览器软件中包含的框架以允许其在本地刷新的实现方法。本发明通过指定程序员可以在客户机上构建View和Controller的函数库来解决开发和维护问题。当模型的一部分维护在客户端上时，客户端能够响应用户交互，而不必支付连续与服务器交互的性能损失。

12. 发明授权

US07543000B2 Method and system combining state replication and operational-replay synchronization 有权
标题翻译：方法和系统结合状态复制和操作重放同步
公开(公告)号：US07543000B2
公开(公告)日：2009-06-02
申请号：US11337393
申请日：2006-01-23
申请人： Paul C. Castro , Ravindranath Konuru , Avraham Leff , James T. Rayfield , Danny L. Yeh
发明人： Paul C. Castro , Ravindranath Konuru , Avraham Leff , James T. Rayfield , Danny L. Yeh
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30578 , Y10S707/99952
摘要： A system, method and computer program product for synchronizing replicas of shared data structures associated with one or more computer systems. The method comprises: evaluating a metric for performing a replica synchronization operation on a first computer system according to a first synchronization method; evaluating the metric for performing a replica synchronization operation on the first computer system according to a second synchronization method; and, selecting, at synchronization time, based on the evaluated metric, whether to use the first or second synchronization methods, and communicating a command to a second computer system to replicate a shared data structure based on the selected synchronization method.
摘要翻译：一种用于同步与一个或多个计算机系统相关联的共享数据结构的副本的系统，方法和计算机程序产品。该方法包括：根据第一同步方法评估在第一计算机系统上执行复制同步操作的度量; 根据第二同步方法评估在所述第一计算机系统上执行副本同步操作的度量; 以及在同步时间，基于所评估的度量来选择是使用所述第一还是第二同步方法，以及基于所选择的同步方法将命令传送到第二计算机系统以复制共享数据结构。

13. 发明申请

US20070174315A1 Compressing state in database replication 审中-公开
标题翻译：在数据库复制中压缩状态
公开(公告)号：US20070174315A1
公开(公告)日：2007-07-26
申请号：US11334599
申请日：2006-01-18
申请人： Avraham Leff , James Rayfield
发明人： Avraham Leff , James Rayfield
IPC分类号： G06F7/00
CPC分类号： G06F16/27
摘要： A method, system and computer program product for compressing state changes to a datum in a primary data storage system. One embodiment of the invention involves receiving a first state-change entry describing at least a first transformation of the datum and an first value of the datum and receiving a second state-change entry describing at least a second transformation of the datum an a second value of the datum. The first and second state-change entries are reduced to a compressed state-change entry including a compressed transformation and a compressed value that are functionally equivalent applying the first transformation and first value, then applying the second transformation and second value, to the datum. The techniques of the invention may be utilized, for example, in redo and undo database replication operations.
摘要翻译：一种用于将状态变化压缩到主数据存储系统中的数据的方法，系统和计算机程序产品。本发明的一个实施例涉及接收描述数据的至少第一变换和数据的第一值的第一状态变化条目，并且接收描述数据的至少第二变换的第二状态变化条目和第二值的基准。将第一和第二状态变化条目简化为压缩状态变化条目，该条目包括在应用第一变换和第一值的功能上等效的压缩变换和压缩值，然后将第二变换和第二值应用于数据。本发明的技术可以用于例如重做和撤销数据库复制操作。

14. 发明申请

US20060010130A1 Method and apparatus for synchronizing client transactions executed by an autonomous client 审中-公开
标题翻译：用于同步由自主客户端执行的客户端事务的方法和装置
公开(公告)号：US20060010130A1
公开(公告)日：2006-01-12
申请号：US10888811
申请日：2004-07-09
申请人： Avraham Leff , James Rayfield
发明人： Avraham Leff , James Rayfield
IPC分类号： G06F17/30
CPC分类号： G06F9/466
摘要： One embodiment of the present method and apparatus for synchronization of client transactions executed by an autonomous client enables a client operating on a limited connection to a server to log transactions executed against a locally stored server database state. Logged transactions are then synchronized with a current server database state by delivering the transaction log to the server, which re-executes each logged client transaction against the current server database state, thereby reducing synchronization-related transaction conflicts.
摘要翻译：用于由自主客户端执行的客户端事务的同步的本方法和装置的一个实施例使得能够在与服务器的有限连接上操作的客户端记录针对本地存储的服务器数据库状态执行的事务。然后通过将事务日志传递到服务器，记录的事务与当前服务器数据库状态同步，服务器根据当前服务器数据库状态重新执行每个记录的客户端事务，从而减少与事件相关的事务冲突。

15. 发明授权

US06950850B1 System and method for dynamic runtime partitioning of model-view-controller applications 失效
标题翻译：模型视图控制器应用程序的动态运行时分区的系统和方法
公开(公告)号：US06950850B1
公开(公告)日：2005-09-27
申请号：US09703187
申请日：2000-10-31
申请人： Avraham Leff , James Thomas Rayfield
发明人： Avraham Leff , James Thomas Rayfield
IPC分类号： G06F9/44 , G06F15/16
CPC分类号： G06F8/36 , G06F9/451 , Y10S707/99943
摘要： Methods and apparatus for dynamic runtime partitioning of network-based client/server applications using a Model-View-Controller pattern are provided. Such dynamic partitioning is accomplished by requiring that the application specify: (i) that access to the Model be done through an application programming interface (API) which allows the system runtime to dynamically allocate and access Model storage on the client and/or server; and (ii) that access to the View be done through an API which allows the system runtime to dynamically allocate and access View components on the client and/or server. This enables applications written and tested in such a manner (referred to herein as the “canonical form”) to execute in a non-distributed mode or in a dynamically partitioned mode in which client/server issues are not a factor. This greatly facilitates development of the application. Furthermore, by specifying View components in an abstract, or “platform-independent” API, the application can run on multiple client devices without modifying the application. All that is required is a platform-specific implementation of the View components' API. Client platforms for the application can thus include, for example, applets, HTML browsers, and PDAs.
摘要翻译：提供了使用Model-View-Controller模式进行基于网络的客户端/服务器应用程序的动态运行时分区的方法和装置。这种动态分区是通过要求应用程序指定：（i）通过允许系统运行时在客户机和/或服务器上动态分配和访问模型存储的应用程序编程接口（API）来完成对模型的访问; 和（ii）通过API来访问View，该API允许系统运行时在客户端和/或服务器上动态分配和访问View组件。这使得以这种方式（本文中称为“规范形式”）编写和测试的应用程序以非分布式模式或动态分区模式执行，其中客户端/服务器问题不是因素。这极大地促进了应用程序的开发。此外，通过在抽象或“平台无关”API中指定View组件，应用程序可以在多个客户端设备上运行，而无需修改应用程序。所需要的只是View组件API的平台特定实现。因此，应用程序的客户端平台可以包括例如小程序，HTML浏览器和PDA。

16. 发明申请

US20050188075A1 System and method for supporting transaction and parallel services in a clustered system based on a service level agreement 审中-公开
标题翻译：基于服务级别协议，在集群系统中支持事务和并行服务的系统和方法
公开(公告)号：US20050188075A1
公开(公告)日：2005-08-25
申请号：US10762916
申请日：2004-01-22
申请人： Daniel Dias , Edwin Lassettre , Avraham Leff , Marcos Novaes , James Rayfield , Noshir Wadia , Peng Ye
发明人： Daniel Dias , Edwin Lassettre , Avraham Leff , Marcos Novaes , James Rayfield , Noshir Wadia , Peng Ye
IPC分类号： G06F15/16 , G06F15/173 , H04L29/06 , H04L29/08
CPC分类号： H04L67/1008 , H04L67/1002 , H04L67/1029 , H04L67/1031 , H04L67/322
摘要： A server allocation controller provides an improved distributed data processing system for facilitating dynamic allocation of computing resources. The server allocation controller supports transaction and parallel services across multiple data centers enabling dynamic allocation of computing resources based on the current workload and service level agreements. The server allocation controller provides a method for dynamic re-partitioning of the workload to handle workload surges. Computing resources are dynamically assigned among transaction and parallel application classes, based on the current and predicted workload. Based on a service level agreement, the server allocation controller monitors and predicts the load on the system. If the current or predicted load cannot be handled with the current system configuration the server allocation controller determines additional resources needed to handle the current or predicted workload. The server cluster is reconfigured to meet the service level agreement.
摘要翻译：服务器分配控制器提供改进的分布式数据处理系统，用于促进计算资源的动态分配。服务器分配控制器支持跨多个数据中心的事务和并行服务，从而能够根据当前工作负载和服务级别协议动态分配计算资源。服务器分配控制器提供了一种用于动态重新分区工作负载以处理工作负载浪涌的方法。基于当前和预测的工作量，计算资源在事务和并行应用程序类之间动态分配。基于服务级别协议，服务器分配控制器监视和预测系统上的负载。如果当前或预测的负载不能用当前系统配置来处理，则服务器分配控制器确定处理当前或预测工作负载所需的其他资源。重新配置服务器集群以满足服务级别协议。

17. 发明授权

US06597366B1 Transparent general purpose object isolation for multi-tier distributed object environments 失效
标题翻译：用于多层分布式对象环境的透明通用对象隔离
公开(公告)号：US06597366B1
公开(公告)日：2003-07-22
申请号：US09483511
申请日：2000-01-14
申请人： Brian T. Bennett , Avraham Leff , Thomas A. Mikalsen , James T. Rayfield , Isabelle M. Rouvellou
发明人： Brian T. Bennett , Avraham Leff , Thomas A. Mikalsen , James T. Rayfield , Isabelle M. Rouvellou
IPC分类号： G06F1760
CPC分类号： G06F9/548 , G06F8/00 , G06F8/60 , G06F9/541
摘要： A method for manipulating objects in isolation, in accordance with the invention, includes providing a shared object, B, from an object provider for use on a distributed object system. A new class of objects are provided which include a facade object, Bf, for B and a versionable representation object, Bv, for B wherein Bf supports a same interface as B. B is permitted to be manipulated in a given context isolated from other contexts for the object B wherein the object provider and an object user are unaware of the production and manipulation of the new class of objects. Method invocations on Bf in the given context are delegated to Bv to associate an instance of Bv with the given context such that one or more versions of object B are persistently maintained in the distributed object system.
摘要翻译：根据本发明的用于隔离地操作对象的方法包括从对象提供者提供共享对象B，以在分布式对象系统上使用。提供了一类新的对象，其中包括B的外观对象Bf和B的版本化表示对象Bv，其中Bf支持与B相同的接口.B允许在与其他上下文隔离的给定上下文中被操纵对于对象B，其中对象提供者和对象用户不知道新类对象的生成和操纵。将给定上下文中的Bf的方法调用委派给Bv以将Bv的实例与给定上下文相关联，使得对象B的一个或多个版本在分布式对象系统中持久保持。

18. 发明授权

US08631049B2 Constructing declarative componentized applications 有权
标题翻译：构造声明化组件化应用程序
公开(公告)号：US08631049B2
公开(公告)日：2014-01-14
申请号：US13431538
申请日：2012-03-27
申请人： Avraham Leff , James Thomas Rayfield
发明人： Avraham Leff , James Thomas Rayfield
IPC分类号： G06F17/00
CPC分类号： G06F8/38
摘要： Techniques for constructing a software application are provided. A data model of the application is represented as a relational model. Control logic of the application is defined to specify each of a plurality of operations of the application as a mapping from a current state of the application data model and one or more current application inputs to a new state of the application data model and one or more application outputs, described by one or more relational algebra operations selected from the group consisting of a relation-complement operation, a disjunction operation and a conjunction operation.
摘要翻译：提供了构建软件应用程序的技术。应用程序的数据模型表示为关系模型。应用程序的控制逻辑被定义为将应用程序的多个操作中的每一个指定为从应用数据模型的当前状态和一个或多个当前应用输入到应用数据模型的新状态和一个或多个应用输出，由从关系互补操作，分离操作和连接操作组成的组中选择的一个或多个关系代数操作描述。

19. 发明申请

US20120317339A1 SYSTEM AND METHOD FOR CACHING DATA IN MEMORY AND ON DISK 审中-公开
标题翻译：用于在存储器和磁盘上缓存数据的系统和方法
公开(公告)号：US20120317339A1
公开(公告)日：2012-12-13
申请号：US13159119
申请日：2011-06-13
申请人： Thomas R. Gissel , Avraham Leff , Benjamin Michael Parees , James Thomas Rayfield
发明人： Thomas R. Gissel , Avraham Leff , Benjamin Michael Parees , James Thomas Rayfield
IPC分类号： G06F12/08 , G06F12/00
CPC分类号： G06F12/0871 , G06F12/0897 , G06F2212/225
摘要： A cache is configured as a hybrid disk-overflow system in which data sets generated by applications running in a distributed computing system are stored in a fast access memory portion of cache, e.g., in random access memory and are moved to a slower access memory portion of cache, e.g., persistent durable memory such as a solid state disk. Each data set includes application-defined key data and bulk data. The bulk data are moved to slab-allocated slower access memory while the key data are maintained in fast access memory. A pointer to the location within the slower access memory containing the bulk data is stored in the fast access memory in association with the key data. Applications call data sets within the cache using the key data, and the pointers facilitate access, management and manipulation of the associated bulk data. Access, management and manipulation occur asynchronously with the application calls.
摘要翻译：缓存被配置为混合磁盘溢出系统，其中在分布式计算系统中运行的应用程序生成的数据集存储在高速缓存的快速存取存储器部分中，例如在随机存取存储器中，并被移动到较慢的存取存储器部分的缓存，例如持久耐用的内存，如固态磁盘。每个数据集包括应用程序定义的关键数据和批量数据。批量数据被移动到slab分配较慢的访问存储器，而密钥数据保存在快速访问存储器中。指向包含批量数据的较慢存取存储器内的位置的指针与密钥数据相关联地存储在快速存取存储器中。应用程序使用密钥数据调用缓存内的数据集，并且指针便于访问，管理和操纵相关的批量数据。访问，管理和操作与应用程序调用异步发生。

20. 发明授权

US07958105B2 System and method for filtering database results using dynamic composite queries 有权
标题翻译：使用动态复合查询过滤数据库结果的系统和方法
公开(公告)号：US07958105B2
公开(公告)日：2011-06-07
申请号：US12044395
申请日：2008-03-07
申请人： Avraham Leff , James T. Rayfield , Timo J. Salo , Brandon J. W. Smith
发明人： Avraham Leff , James T. Rayfield , Timo J. Salo , Brandon J. W. Smith
IPC分类号： G06F17/30
CPC分类号： G06F17/30424 , G06F21/6227
摘要： A method, system and computer program product for retrieving data records to a client computer. An identifier of a base query is received from the client computer. The base query is configured to select a set of data records from a database that the client computer has permission to access. A modifying clause is also received from the client computer. The modifying clause comprises a directive restricting the set of data records to a subset of data records. The modifying clause may optionally comprise an expression for sorting. A combined query is generated from the base query and the modifying clause. The query is configured to return the subset of data records. The combined query is further configured to sort the subset of data records based on the value of the expression if the expression is present. The combined query is executed at the database.
摘要翻译：一种用于将数据记录检索到客户端计算机的方法，系统和计算机程序产品。从客户端计算机接收到基本查询的标识符。基本查询配置为从客户端计算机具有访问权限的数据库中选择一组数据记录。还从客户端计算机接收修改子句。修改子句包括将数据记录集合限制到数据记录的子集的指令。修改子句可以可选地包括用于排序的表达式。从基本查询和modify子句生成组合查询。该查询被配置为返回数据记录的子集。组合查询还被配置为如果表达式存在，则基于表达式的值对数据记录的子集进行排序。组合查询在数据库中执行。

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