International Business Machines Corporation

Simon Anthony James Holdsworth

George Prentice Copeland

Stanley Alan Smith

Stephen James Paul Todd

Marc-Thomas Schmidt

Michael George Taylor

Timothy Nicholas Holloway

Malcolm David Ayres

A message broker data processing apparatus has a unit for receiving published messages on a topic from a publisher application; a unit for processing the received messages; and a unit for distributing the processed messages to subscriber applications; wherein the unit for distributing includes a plurality of subscription point data processing nodes, a first subscription point data processing node distributes messages to a subscriber application which has previously registered a subscription request identifying the first subscription point data processing node with the broker apparatus.

Publish/subscribe data processing with subscription points for customized message processing

A system and method for effectively synchronizing data in an object oriented distributed transaction processing system employing a multilevel data store. Each object that maintains first-level volatile data registers as a synchronization object if unsynchronized changes to that data exist. A register object at each node tracks synchronized objects registered for that node. Each registered synchronization object, in turn, registers with its superior node when registered synchronization objects are present. A hierarchy of registered synchronization objects and synchronization objects is thereby created. The transaction termination process transmits a pre-prepare message to the registered synchronization hierarchy providing each synchronization object an opportunity to flush its data to the second-level persistent data store. The hierarchical structure of registered objects ensures that the minimum number of messages are transmitted over the network.

System and method for efficiently synchronizing cache and persistant data in an object oriented transaction processing system

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Andover, United Kingdom

Simon Anthony James Holdsworth