Beyond Browsing : Trigger Processing and Change Noti cation ( Extended
نویسندگان
چکیده
This paper presents the design and implementation methodology of the JCQ system, a Java-based Continual Query system for update monitoring over Web information sources. A continual query is a standing query that monitors updates of interest using distributed triggers and notiies users whenever the updates reach speciied thresholds. In this paper we focus on the strategies and techniques developed in JCQ for scalable and eecient trigger ring and the execution model for exi-ble and robust change notiication. We evaluate our approach through a performance study of the most recent release of the JCQ system and a comparison with related work.
منابع مشابه
Supporting Internet Applications beyond Browsing: Trigger Processing and Change Notification (Extended Abstract)
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