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    • 3. 发明授权
    • System and method for regulating incoming traffic to a server farm
    • 用于调节到服务器场的进入流量的系统和方法
    • US06883033B2
    • 2005-04-19
    • US09921989
    • 2001-02-20
    • Kiyoshi MaruyamaShun Shing ChanJarir Kamel ChaarJean A. LorrainMiram ZoharDavid Alson George
    • Kiyoshi MaruyamaShun Shing ChanJarir Kamel ChaarJean A. LorrainMiram ZoharDavid Alson George
    • H04L12/28H04L12/56H04L29/06H04L29/08G06F15/16
    • H04L67/1008H04L47/10H04L47/193H04L47/20H04L47/22H04L67/1002H04L67/1012
    • A system and method for controlling the rates at which application workload, e.g., TCP connection requests, is admitted to a collection of servers, such as a server farm of an application service provider (ASP) that hosts Internet World Wide Web (WWW) sites of various owners. The system and method are intended to operate in an environment in which each customer has a workload-based SLA for each type of application hosted by the provider and used by the customer. The system and method achieve support (minimum, maximum) TCP connection requests for multiple customers and applications. According to one aspect, the system and method guarantee, control and deliver TCP connection-based workload SLA's to customers whose applications are hosted by the server farm with the use of a workload regulator that operates by regulating only new TCP connection request packets while transparently passing existing TCP connection packets and other request packets received for customers. The regulator further operates by regulating the flow of incoming TCP connection requests to each customer business activity application so as to guarantee a level of service previously agreed to each customer (per their respective SLA's) by applying rate admittance to requests and by dropping (or rejecting) requests to guarantee the agreed service levels to the customer's application.
    • 用于控制应用工作负载(例如,TCP连接请求)被允许进入诸如承载互联网万维网(WWW)站点的应用服务提供商(ASP)的服务器场的服务器集合的速率的系统和方法 的各种业主。 该系统和方法旨在在每个客户具有由供应商托管并由客户使用的每种类型的应用的基于工作负载的SLA的环境中操作。 系统和方法为多个客户和应用程序实现支持(最小,最大)TCP连接请求。 根据一方面,系统和方法保证,控制和传送基于TCP连接的工作负载SLA到其应用程序由服务器场托管的客户,使用工作负载调节器,该工作负载调节器通过仅通过调整新的TCP连接请求数据包进行操作,同时透明地传递 现有TCP连接数据包和其他请求数据包接收给客户。 监管机构进一步通过调整到每个客户业务活动应用程序的传入TCP连接请求的流程来进行操作,以便通过对请求进行速率准入并通过丢弃(或拒绝)来保证先前已经同意每个客户的服务水平(通过其各自的SLA) )要求保证客户的应用程序达成一致的服务水平。