Albert Yu

Department of Computer Science,
Duke University.

Office: LSRC D211.
Email: syu at cs.duke.edu

• Research
• 4. Top-k preference subscriptions
  3. Range top-k subscriptions
  2. Dissemination network design
  1. Prosem system demonstration
• Teaching experiences
• Professional Certificates
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ProSem System demonstration.

ProSem is a scalable wide-area publish/subscribe system that supports complex, stateful subscriptions as well as simple ones. A main feature of ProSem is its cost-based joint optimization of both subscription processing and notification dissemination.

To demonstrate how dissemination occurs and how various choices affect dissemination costs, I built the system visualization component for the ProSem System. A structure visualizer shows the network topology and routes chosen for dissemination. It also shows the traffic along overlay links and summary statistics for each broker. A time-series visualizer plots various performance metrics over time, including throughput, response time, and bandwidth consumption.

Publication:

• Badrish Chandramouli, Jun Yang, Pankaj K. Agarwal, Albert Yu, and Ying Zheng. "ProSem: Scalable Wide-Area Publish/Subscribe." In Proceedings of the 2008 ACM SIGMOD International Conference on Management of Data (SIGMOD '08), Vancouver, Canada, June 2008. paper.