International Business Machines Corporation

Dennis L Hartel

Gordan G Greenlee

Bahri B Bali

Sean E Aschen

Catherine Y Barnes

Richard E Weingarten

Joseph F Riina

A system and method for controlling rates for a Lightweight Directory Access Protocol (LDAP) over MQSeries (LoM) server. The system includes a health metrics engine that calculates an actual delay value, a LoM server that asynchronously obtains the actual delay value from the health metrics engine and place the delay value between one or more requests, and a LDAP master that accepts the one or more requests and send information in the one or more requests to a LDAP replica.

System and method for a rate control technique for a lightweight directory access protocol over MQSeries (LoM) server

A system and method for controlling rates for a Lightweight Directory Access Protocol (LDAP) over MQSeries (LoM) server. The system comprises a health metrics engine configured to calculate an actual delay value, at least one LoM server configured to asynchronously obtain the actual delay value from the health metrics engine and place the delay value between one or more requests, and a LDAP master configured to accept the one or more requests and send information in the one or more requests to a LDAP replica.

Rate control technique for a lightweight directory access protocol over MQSeries (LoM) server

A method and system is provided intelligent network dispatchers that are capable of routing requests to one or more servers (e.g., LDAP servers) based on the requested application or the identity of the requester. The servers may be grouped into virtual clusters so that a particular cluster may service requests associated with a particular application or based on a type of customer (e.g., preferred or general customer) in order to grade levels of service. Also, a system resource monitor may provide continual monitoring of servers in virtual clusters to determine when one or more servers are overburdened or under burdened based on statistical performance data. As a servers performance changes, the system resource monitor may advise the intelligent network dispatcher causing a change in the rate of requests to the overburdened/under burdened server. The server may be temporarily removed from the virtual cluster until performance levels normalize. Further, servers may be re-assigned to other virtual clusters on demand to provide increased capacity to a virtual cluster.

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Berthoud, CO, United States of America

Dennis L Hartel