发明名称 |
Generation of a set of pre-filters from a set of event subscriptions to more efficiently select events of interest |
摘要 |
A method, system and computer program product for achieving a balance between pre-filter efficiency and pre-filter throughput. Event subscriptions are obtained for a given event consumer. The event subscriptions define the events to be routed to this event consumer. Pre-filters of varying complexity and filtering power are constructed based on these event subscriptions. A balance between pre-filter efficiency and pre-filter throughput may be achieved by selecting the best pre-filter out of these constructed pre-filters to filter events to its associated event consumer. The best pre-filter is selected by comparing a complexity threshold (e.g., a limit for the number of atomic Boolean expressions in a pre-filter) with the actual complexity (e.g., the actual number of atomic Boolean expressions) for each constructed pre-filter and selecting the most complex pre-filter without exceeding the threshold.
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申请公布号 |
US8521689(B2) |
申请公布日期 |
2013.08.27 |
申请号 |
US20070737928 |
申请日期 |
2007.04.20 |
申请人 |
ALCORN JOHN WILLIAM;BARKER KEVIN SPENCER;EADS DAVID MICHAEL;FRANK JOACHIM H.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ALCORN JOHN WILLIAM;BARKER KEVIN SPENCER;EADS DAVID MICHAEL;FRANK JOACHIM H. |
分类号 |
G06F7/00;G06F17/00 |
主分类号 |
G06F7/00 |
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