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Systems and methods for client-side filtering of subscribed messages

  • US 7,293,038 B2
  • Filed: 02/24/2004
  • Issued: 11/06/2007
  • Est. Priority Date: 02/25/2003
  • Status: Active Grant
First Claim
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1. A system for filtering messages between servers on a message channel, comprising:

  • a message broker component adapted to allow servers to publish messages to a message channel;

    a message filter on each servers, each message filter containing a filter value for at least one servers on the message channel; and

    a query component on each servers, each query component adapted to extract data from a message to be published, whereby the extracted data is compared with the filter value in order to determine whether to send a subscriber the message;

    wherein the message broker accesses an indication in memory of whether any of the servers is capable of doing a dynamic subscription to the message channel, if so, the message broker accesses a database to get the message filter, if not the message broker access a cache memory to get the message filter.

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