Patent ID: 6202093
Filing Date: 2001-03-13
Classification: H04L,Y10S

Abstract:
In a publish/subscribe data processing broker network having a plurality of broker computer systems communicating with each other via the network each of which has an input for receiving published messages directly from a publisher application and/or receiving subscription data directly from a subscriber application, a first broker computer system comprising:means for receiving via said input a data message published on a first topic by a first publisher application;means for receiving via said input subscription data on the first topic from a first subscriber application;means for forwarding the received published data message to another broker computer system;wherein at least one of:(a) the data message published on the first topic by the first publisher application; and(b) the subscription data on the first topic from the first subscriber application;includes an indication as to whether the published data message and/or subscription data is to be considered as local to the first broker computer system; andwherein the first broker computer system further includes blocking means responsive to said indication for blocking the forwarding of published data and/or subscription data when said indication indicates that the published data message and/or subscription data is to be considered as local to the first broker computer system.