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    • 5. 发明授权
    • Method and apparatus for providing a flexible and scalable context service
    • 提供灵活且可扩展的上下文服务的方法和装置
    • US06970947B2
    • 2005-11-29
    • US10198283
    • 2002-07-18
    • Maria Rene EblingGuerney Douglass Holloway HuntHui Lei
    • Maria Rene EblingGuerney Douglass Holloway HuntHui Lei
    • G06F9/00G06F9/46G06F15/16G06F15/173H04L29/08
    • G06F9/542G06F2209/544H04L67/2814H04L67/327
    • A flexible and extensible context server for collecting, maintaining, and disseminating context information is disclosed. The context server receives requests from requesters for context information via a secure context server interface (SCS API). Communication between the requesters and the context server is conducted by means of predetermined forms. The requests received at the SCS API are passed to a mediator, which collects data from various context drivers. Each context driver is coupled to the mediator, and collects predetermined type of context information from at least one context information source. The mediator determines the appropriate context driver which can handle the request, based on its type. Operation of the context server is also controlled by a set of context utilities, including a context cache for storing recently obtained context information, a privacy engine for storing privacy preferences and an event engine for event handling.
    • 公开了用于收集,维护和传播上下文信息的灵活且可扩展的上下文服务器。 上下文服务器通过安全上下文服务器接口(SCS API)从请求者接收上下文信息的请求。 请求者和上下文服务器之间的通信是通过预定的形式进行的。 在SCS API收到的请求被传递给一个调解员,它从各种上下文驱动程序收集数据。 每个上下文驱动器耦合到中介器,并且从至少一个上下文信息源收集预定类型的上下文信息。 调解者根据其类型确定可以处理请求的适当上下文驱动程序。 上下文服务器的操作也由一组上下文实用程序控制,包括用于存储最近获得的上下文信息的上下文高速缓存,用于存储隐私偏好的隐私引擎和用于事件处理的事件引擎。
    • 6. 发明授权
    • Affinity-based router and routing method
    • 基于亲和力的路由器和路由方法
    • US06424992B2
    • 2002-07-23
    • US08947361
    • 1997-10-08
    • Murthy V. DevarakondaDaniel Manuel DiasGerman Sergio GoldszmidtGuerney Douglass Holloway HuntArun Kwangil IyengarRichard Pervin KingRajat Mukherjee
    • Murthy V. DevarakondaDaniel Manuel DiasGerman Sergio GoldszmidtGuerney Douglass Holloway HuntArun Kwangil IyengarRichard Pervin KingRajat Mukherjee
    • G06F1300
    • H04L67/1008H04L67/1002H04L67/1027
    • An affinity-based router and method for routing and load balancing in an encapsulated cluster of server nodes is disclosed. The system consists of a multi-node server, wherein any of the server nodes can handle a client request, but wherein clients have affinity to one or more of the server nodes that are preferred to handle a client request. Such affinity is due to state at the servers either due to previous routing requests, or data affinity at the server. At the multi-node server, a node may be designated as a TCP router. The address of the TCP router is given out to clients, and client requests are sent thereto. The TCP router selects one of the nodes in the multi-node server to process the client request, and routes the request to this server; in addition, the TCP router maintains affinity tables, containing affinity records, indicating which node a client was routed to. In processing the client request, the server nodes may determine that another node is better suited to handle the client request, and may reset the corresponding TCP router affinity table entry. The server nodes may also create, modify or delete affinity records in the TCP router affinity table. Subsequent requests from this client are routed to server nodes based on any affinity records, possibly combined on other information (such as load).
    • 公开了一种基于亲和力的路由器和方法,用于在封装的服务器节点集群中进行路由和负载平衡。 该系统由多节点服务器组成,其中任何服务器节点可以处理客户端请求,但是其中客户端对于优先处理客户端请求的一个或多个服务器节点具有亲和力。 这种亲和力是由于在服务器处的状态是由于先前的路由请求或在服务器处的数据关联。 在多节点服务器上,可以将节点指定为TCP路由器。 将TCP路由器的地址发送给客户端,并向客户端发送客户端请求。 TCP路由器选择多节点服务器中的一个节点来处理客户端请求,并将请求路由到该服务器; 此外,TCP路由器维护包含亲和性记录的关联表,指示客户端被路由到哪个节点。 在处理客户端请求时,服务器节点可以确定另一个节点更适合处理客户机请求,并且可以重置对应的TCP路由器亲和性表项。 服务器节点还可以在TCP路由器亲和性表中创建,修改或删除关联记录。 来自该客户端的后续请求将基于任何关联记录路由到服务器节点,可能与其他信息(如加载)相结合。