Abstract: A data service system includes a server system. The server system includes a request processor that schedules external requests to be serviced by the server system based on classification information contained in a tag of each of the requests. An application system is coupled to the server system. The application system includes an application engine that performs a transaction requested by an external request and provides response to the request to the server system. The application system also includes a business rule engine that stores business rules regarding classification for various transactions. The business rule engine also uses the business rules to analyze the response to the request. A tag generator is provided in the application system that generates the tag based on the analysis of the business rule engine.

Abstract: An adaptive admission control system for a server application system includes a request queue that stores incoming requests. A discard queue is provided to store requests to be discarded. An actuator is coupled to the request queue and the discard queue to determine the input rate of requests during a previous processing cycle. A controller is coupled to the actuator and the request queue to determine a target number of requests to be sent to the request queue during the next processing cycle based on the difference between the actual and desired queue occupancy of the request queue. The controller sends the target number to the actuator. The actuator sends the target number of requests to the request queue either from the listen queue or from the listen queue and the discard queue based on the input rate of requests from the listen queue.

Abstract: An acceptor for admitting incoming requests to a server application includes a session manager that determines the class of an incoming request. The class includes a first class and a second class. A queuing module is provided to store the request if the incoming request is of the second class. A priority control module is provided to ensure that a predetermined number of requests are sent to the server application for service in each cycle. The priority control module allows (1) the predetermined number of the first class requests to be sent to the server application if the first class requests received in a cycle are at least equal to the predetermined number, and (2) a mixture of the first class requests and the second class requests to be sent to the server application if the first class requests received in a cycle are less than the predetermined number. A method of handling incoming requests to the server application is also described.

Abstract: A service management system in a federated system having a first and a second independently administered data service systems is described. The service management system includes a service manager that provides selective management data of the second data service system to the first data service system in accordance with a predetermined service level agreement between the first and second data service systems without giving the first data service system complete access to the second data service system. A method of selectively providing management data from one independently administered data service system to another independently administered data service system is also described.

Abstract: A diagnostic system for a data access networked system (e.g., an Internet/Intranet access networked system) is described. The data access networked system includes a number of data service systems coupled together. Each of the data service systems is independently administrated. The diagnostic system includes a number of diagnostic modules, each running a number of diagnostic tests within one of the data service systems upon receiving a diagnostic request. The diagnostic modules also transmit the diagnostic request and diagnostic results to one another using an open standard communication protocol. The diagnostic system also includes a diagnostic terminal that is coupled to a first diagnostic module of the diagnostic modules to generate the diagnostic request to the first diagnostic module and to display the diagnostic results received from the first diagnostic module. A diagnostic system for a data service system of a data access networked system is also described.