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11.发明授权Methods and systems for distributed failure detection and recovery using leasing techniques 有权使用租赁技术进行分布式故障检测和恢复的方法和系统公开(公告)号：US06760736B2
公开(公告)日：2004-07-06
申请号：US09739744
申请日：2000-12-20
IPC分类号： G06F1730
CPC分类号： G06F12/0261 , G06F9/4411 , G06F9/465 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5055 , G06F9/5061 , G06F9/52 , G06F9/547 , G06F12/023 , G06F12/0253 , G06F17/30607 , H04L12/417 , H04L12/433 , H04L29/06 , H04L69/24 , Y10S707/99933 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953 , Y10S707/99957
摘要： A system for using a lease to detect a failure and to perform failure recovery is provided in using this system, a client requests a lease from a server to utilize a resource managed by the server for a period of time. Responsive to the request, the server grants the lease, and the client continually requests renewal of the lease. If the client fails to renew the lease, the server detects that an error has occurred to the client. Similarly, if the server fails to respond to a renew request, the client detects that an error has occurred to the server. As part of the lease establishment, the client and server exchange failure-recovery routines that each invokes if the other experiences a failure.
摘要翻译： 在使用该系统时，提供了使用租赁来检测故障并执行故障恢复的系统，客户端请求服务器租用一段时间内由服务器管理的资源。 响应请求，服务器授予租约，客户端不断要求续租。 如果客户端无法续订租约，则服务器检测到客户端发生错误。 类似地，如果服务器无法响应更新请求，客户端会检测到服务器发生错误。 作为租赁建立的一部分，客户端和服务器交换故障恢复例程，如果其他用户遇到故障，它们将调用。
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公开(公告)号：US06578044B1
公开(公告)日：2003-06-10
申请号：US09044945
申请日：1998-03-20
IPC分类号： G06F1730
CPC分类号： G06F17/30607 , G06F9/4411 , Y10S707/99942 , Y10S707/99944
摘要： A database system wherein one or more entry databases store a plurality of entries. Each entry is of a given type that defines the fields of the entry. Each field contains or identifies an object with associated attributes or data. The type of each entry may further define behavior in the form of methods the entry can implement. An entry type which is a subtype of another inherits all fields and behavior of its super-type, and contains additional fields and/or defines new/modified behavior. Entries may be expressed in a Java™ programming language. The database system may further employ a search engine which allows queries to be made upon entries in the database. In one implementation, the queries include a read operation, a take operation, and a notify operation. Each query request includes a command indicating the type of operation, and a template which is an entry object having some or all of its fields set to specific values that must be matched exactly. Other fields of the template entry may be specified as wildcards, whose values do not matter. The search engine may further be configured to create an index for caching entries having characteristics which are commonly specified by queries. In one implementation, the databases may also store and perform operations on sets of entries. Additionally, associating attributes to the fields of entries allows the system to achieve type-safe attribute matching.
摘要翻译： 数据库系统，其中一个或多个条目数据库存储多个条目。 每个条目都是给定类型，用于定义条目的字段。 每个字段包含或标识具有关联属性或数据的对象。 每个条目的类型可以进一步以条目可以实现的方法的形式定义行为。 作为另一个子类型的条目类型将继承其超类型的所有字段和行为，并包含其他字段和/或定义新的/已修改的行为。 条目可以用Java（TM）编程语言表示。 数据库系统还可以采用允许在数据库中的条目进行查询的搜索引擎。 在一个实现中，查询包括读操作，执行操作和通知操作。 每个查询请求包括指示操作类型的命令，以及作为入口对象的模板，其中的一些或所有字段被设置为必须精确匹配的特定值。 模板条目的其他字段可以指定为通配符，其值无关紧要。 搜索引擎还可以被配置为创建用于缓存具有由查询通常指定的特征的条目的索引。 在一个实现中，数据库还可以存储和执行对条目集合的操作。 另外，将属性与条目的字段关联允许系统实现类型安全的属性匹配。
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公开(公告)号：US06567820B1
公开(公告)日：2003-05-20
申请号：US09716933
申请日：2000-11-21
IPC分类号： G06F1730
CPC分类号： G06F17/30607 , G06F9/4411 , G06F9/465 , G06F9/52 , G06F9/547 , G06F12/0261 , H04L29/06 , H04L69/24 , Y10S707/99931 , Y10S707/99944
摘要： A database system wherein one or more entry databases store a plurality of entries. Each entry is of a given type that defines the fields of the entry. Each field contains or identifies an object with associated attributes or data. The type of each entry may further define behavior in the form of methods the entry can implement. An entry type which is a subtype of another inherits all fields and behavior of its super-type, and contains additional fields and/or defines new/modified behavior. Entries may be expressed in a Java™ programming language. The database system may further employ a search engine which allows queries to be made upon entries in the database. In one implementation, the queries include a read operation, a take operation, and a notify operation. Each query request includes a command indicating the type of operation, and a template which is an entry object having some or all of its fields set to specific values that must be matched exactly. Other fields of the template entry may be specified as wildcards, whose values do not matter. The search engine may further be configured to create an index for caching entries having characteristics which are commonly specified by queries. In one implementation, the databases may also store sets of entries which are matched using sets of templates.
摘要翻译： 数据库系统，其中一个或多个条目数据库存储多个条目。 每个条目都是给定类型，用于定义条目的字段。 每个字段包含或标识具有关联属性或数据的对象。 每个条目的类型可以进一步以条目可以实现的方法的形式定义行为。 作为另一个子类型的条目类型将继承其超类型的所有字段和行为，并包含其他字段和/或定义新的/已修改的行为。 条目可以用Java（TM）编程语言表示。 数据库系统还可以采用允许在数据库中的条目进行查询的搜索引擎。 在一个实现中，查询包括读操作，执行操作和通知操作。 每个查询请求包括指示操作类型的命令，以及作为入口对象的模板，其中的一些或所有字段被设置为必须精确匹配的特定值。 模板条目的其他字段可以指定为通配符，其值无关紧要。 搜索引擎还可以被配置为创建用于缓存具有由查询通常指定的特征的条目的索引。 在一个实现中，数据库还可以存储使用模板集来匹配的条目集合。
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公开(公告)号：US06519615B1
公开(公告)日：2003-02-11
申请号：US09690472
申请日：2000-10-18
IPC分类号： G06F1730
CPC分类号： G06F12/0261 , G06F9/4411 , G06F9/465 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5055 , G06F9/5061 , G06F9/52 , G06F9/547 , G06F12/023 , G06F12/0253 , G06F17/30607 , H04L12/417 , H04L12/433 , H04L29/06 , H04L69/24 , Y10S707/99933 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953 , Y10S707/99957
摘要： A method and system for leasing storage locations in a distributed processing system is provided. Consistent with this method and system, a client requests access to storage locations for a period of time (lease period) from a server, such as the file system manager. Responsive to this request, the server invokes a lease period algorithm, which considers various factors to determine a lease period during which time the client may access the storage locations. After a lease is granted, the server sends an object to the client that advises the client of the lease period and that provides the client with behavior to modify the lease, like canceling the lease or renewing the lease. The server supports concurrent leases, exact leases, and leases for various types of access. After all leases to a storage location expire, the server reclaims the storage location.
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公开(公告)号：US06466947B2
公开(公告)日：2002-10-15
申请号：US09044932
申请日：1998-03-20
IPC分类号： G06F1700
CPC分类号： G06F9/4411 , G06F9/465 , H04L67/10 , Y10S707/955 , Y10S707/966 , Y10S707/99933 , Y10S707/99939 , Y10S707/99942 , Y10S707/99943 , Y10S707/99945 , Y10S707/99948 , Y10S707/99952
摘要： Use of a policy object for verification in a distributed system. A machine downloads a policy object containing a reference to code governing verification of data. The machine uses the reference to obtain the code and locally verify data or other information. As particular rules for the data change, the policy object may be updated to provide a reference to the code for the new rules when it is downloaded.
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公开(公告)号：US06314435B1
公开(公告)日：2001-11-06
申请号：US09152062
申请日：1998-09-11
申请人： Ann M. Wollrath , James H. Waldo , Roger Riggs
发明人： Ann M. Wollrath , James H. Waldo , Roger Riggs
IPC分类号： G06F1730
CPC分类号： G06F12/0261 , G06F9/4411 , G06F9/465 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5055 , G06F9/5061 , G06F9/52 , G06F9/547 , G06F12/023 , G06F12/0253 , G06F17/30607 , H04L12/417 , H04L12/433 , H04L29/06 , H04L69/24 , Y10S707/99933 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953 , Y10S707/99957
摘要： In accordance with the present invention a process is provided for allocating and deallocating resources in a distributed processing system having a requester platform and a server platform. The process involves receiving a request from the requestor platform referring to a system resource and specifying a requested lease period, permitting shared access to the system resource for a lease period, sending a return call to the requestor platform advising of the lease period, and deallocating the system resource when the lease period expires.
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17.发明授权Deferred reconstruction of objects and remote loading in a distributed system 失效对象的延迟重建和分布式系统中的远程加载公开(公告)号：US06253256B1
公开(公告)日：2001-06-26
申请号：US08950756
申请日：1997-10-15
IPC分类号： G06F1300
摘要： A method and system for transmitting objects in an object-oriented distributed system allows the reconstruction of objects and downloading of code associated with such object reconstruction to be deferred until it is needed by a program. The deferred reconstruction is accomplished by using a Java object called a “marshalled object,” which is a self-describing stream and which is a first-class entity in the system, meaning that it exists within a type system of a programming language and can be accessed and manipulated by instructions written in that language. Such an object can typically be produced by any object that can be passed from one address space to another, and it can be stored, passed to other objects, or used to reconstruct an object of the original type on demand. The reconstruction of an object is deferred until the code holding a marshalled object directly calls the creation of the object using the marshalled object. Any downloading of code is also deferred until the marshalled object is used to create a copy of the original object.
摘要翻译： 用于在面向对象的分布式系统中传送对象的方法和系统允许对对象的重建和与这样的对象重建相关联的代码的下载被推迟直到程序需要。 延迟重建通过使用称为“编组对象”的Java对象来实现，该对象是自描述流，并且是系统中的第一类实体，意味着它存在于编程语言的类型系统中，并且可以 通过用该语言编写的指令进行访问和操作。 这样的对象通常可以由可以从一个地址空间传递到另一个地址空间的任何对象来生成，并且可以将其存储，传递给其他对象，或用于根据需要重建原始类型的对象。 一个对象的重建被推迟，直到保持编组对象的代码直接使用编组对象来调用对象的创建。 代码的任何下载也被推迟到使用编组的对象来创建原始对象的副本。
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18.发明授权System and method for determining affinity groups and co-locating the affinity groups in a distributing network 有权用于确定亲和度组并在分布式网络中共同定位亲和组的系统和方法公开(公告)号：US08380843B2
公开(公告)日：2013-02-19
申请号：US12556672
申请日：2009-09-10
IPC分类号： G06F15/16
CPC分类号： G06F9/5072 , G06F2209/505 , G06Q10/10
摘要： In at least one embodiment, an apparatus for determining one or more affinity groups in a distributed network is provided. A first distributed computing device is operably coupled to a plurality of clients for enabling electronic interactive activities therebetween. The first distributed computing device is configured to detect at least one network interaction among the plurality of clients. The first distributed computing device is further configured to generate at least one weighted value based on the number of detected network interactions. The first distributed computing device is further configured to establish an affinity group comprising at least one client from the plurality of clients based on the at least one weighted value.
摘要翻译： 在至少一个实施例中，提供了用于确定分布式网络中的一个或多个关联组的装置。 第一分布式计算设备可操作地耦合到多个客户端，以实现其间的电子交互活动。 第一分布式计算设备被配置为检测多个客户端中的至少一个网络交互。 第一分布式计算设备还被配置为基于检测到的网络交互的数量来生成至少一个加权值。 第一分布式计算设备还被配置为基于所述至少一个加权值来建立包括来自所述多个客户端中的至少一个客户端的亲和度组。
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19.发明申请SYSTEM AND METHOD FOR DETERMINING AFFINITY GROUPS AND CO-LOCATING THE AFFINITY GROUPS IN A DISTRIBUTING NETWORK 有权系统和方法，用于确定分布式网络中的重要组合和协调公开(公告)号：US20110060821A1
公开(公告)日：2011-03-10
申请号：US12556672
申请日：2009-09-10
IPC分类号： G06F15/173
CPC分类号： G06F9/5072 , G06F2209/505 , G06Q10/10
摘要： In at least one embodiment, an apparatus for determining one or more affinity groups in a distributed network is provided. A first distributed computing device is operably coupled to a plurality of clients for enabling electronic interactive activities therebetween. The first distributed computing device is configured to detect at least one network interaction among the plurality of clients. The first distributed computing device is further configured to generate at least one weighted value based on the number of detected network interactions. The first distributed computing device is further configured to establish an affinity group comprising at least one client from the plurality of clients based on the at least one weighted value.
摘要翻译： 在至少一个实施例中，提供了用于确定分布式网络中的一个或多个关联组的装置。 第一分布式计算设备可操作地耦合到多个客户端，以实现其间的电子交互活动。 第一分布式计算设备被配置为检测多个客户端中的至少一个网络交互。 第一分布式计算设备还被配置为基于检测到的网络交互的数量来生成至少一个加权值。 第一分布式计算设备还被配置为基于所述至少一个加权值来建立包括来自所述多个客户端中的至少一个客户端的亲和度组。
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20.发明授权公开(公告)号：US07210148B2
公开(公告)日：2007-04-24
申请号：US09809201
申请日：2001-03-16
CPC分类号： G06F9/547 , G06F9/5044 , G06F9/505 , G06F9/52 , G06F2209/549 , Y10S707/99938
摘要： A homogeneous execution environment operates within a heterogeneous client-server network. A client selects a server and transmits a procedure call with parameters. In response, a server dynamically and securely downloads code to a compute server; invokes a generic compute method; executes the code on the compute server; and returns the results to the calling client method, preserving the result on the compute server if requested. This technique is efficient in that it does not require multiple copies of code to be downloaded or compiled since server byte-codes can be executed on each of the different systems, therefore downloading or compiling multiple copies of code can be avoided. The code can be compiled once and downloaded as needed to the various servers as byte-codes and then executed.
摘要翻译： 均匀的执行环境在异构的客户端 - 服务器网络内运行。 客户端选择一个服务器并发送具有参数的过程调用。 作为响应，服务器动态安全地将代码下载到计算服务器; 调用通用计算方法; 执行计算服务器上的代码; 并将结果返回给调用客户端方法，如果请求，则在计算服务器上保留结果。 这种技术是有效的，因为不需要下载或编译多个代码副本，因为可以在每个不同的系统上执行服务器字节码，因此可以避免下载或编译多个代码副本。 代码可以编译一次，并根据需要下载到各种服务器作为字节代码，然后执行。
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