International Business Machines Corporation

Roger L Cundiff, Jr

Leigh Allen Williamson

Steven Duane Clay

Christopher Paul Vignola

Thomas Edward Musta

Federico A Galarraga

Dimitar G Dimitrov

For passive detection of live systems during controller failover in a distributed environment, a set of member systems is sorted according to heartbeat periods used by members in the set of member systems. An amount of elapsed time since a failure of a first controller system in the distributed environment is determined. From the sorted set, a first member system is selected due to a first heartbeat period of the first member system being a shortest heartbeat period in all heartbeat periods in the sorted set of member systems. Using a processor and a memory at a second controller system, a timeout period is computed. The timeout period is an amount of time remaining in the first heartbeat period after the amount of elapsed time. The first member system is removed from the sorted set after the timeout period expires and the first member system has not sent a heartbeat.

Passive detection of live systems during controller failover in distributed environments

A method for allowing an enterprise application server to integrate and make use of any messaging product or products that support a standard messaging service interfaces. In a first phase of the method, an administrator creates and installs a new messaging provider on an application server, creates new messaging resource objects such as connection factories and destinations, and then binds these into the original namespace of the default messaging provider. An application which references the new messaging provider is then deployed onto the application server. Then, when the application program is executing, it may perform a lookup for the new messaging service, which the application server performs through the default context factory to obtain a new messaging object, which is then handed to the requesting application for use as needed. This method of indirection allows the application server to integrated and use any messaging service, not just the default messaging server originally integrated by the application server vendor.

Pluggable JMS providers in a J2EE server

Growing community of inventors

Austin, TX, United States of America

Roger L Cundiff, Jr