I graduated in August 2012. Before that, I worked with Prof. Xiaowei Yang. My past projects span over three main areas: cloud computing and distributed system, Internet routing, and network security.

Selected Publications (All)

CloudProphet: Predicting Web Application Performance in the Cloud [PDF]
Ang Li, Xuanran Zong, Ming Zhang, Srikanth Kandula, and Xiaowei Yang
Duke University technical report.

A lightweight trace-and-replay tool to accurately predict a web application's performance if migrated to a cloud platform. We evaluate the tool with real applications on three cloud providers: AWS, Rackspace, and Storm-on-demand.

Bootstrapping Accountability in the Internet We Have [PDF]
Ang Li, Xin Liu, Xiaowei Yang
USENIX/ACM Symposium on Networked Systems Design and Implementation, Apr. 2011.

A low-cost and deployable way to make Internet accountable. DNSSEC is used to bind prefixes to their owners' keys, and the certificates are piggybacked in BGP messages.

CloudCmp: Comparing Public Cloud Providers [PDF|TALK]
Ang Li, Xiaowei Yang, Srikanth Kandula, Ming Zhang
Internet Measurement Conference, Nov 2010.

A systematic comparison study over four popular public cloud providers. The CloudCmp benchmark tool is available on github, and the original dataset used in the paper can be downloaded from our project website.

CloudCmp: Shopping for a Cloud Made Easy [PDF|TALK]
Ang Li, Xiaowei Yang, Srikanth Kandula, Ming Zhang
2nd USENIX Workshop on Hot Topics in Cloud Computing (HotCloud), June 2010.

A position paper making the case for using performance prediction to help customers choose cloud providers. Press coverage: ZDNet and MIT Tech Review

SafeGuard: Safe Forwarding during Route Changes [PDF|TALK|TR]
Ang Li, Xiaowei Yang, and David Wetherall
ACM International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Dec. 2009

A new forwarding scheme that is safe and loop-free even in the face of route changes.

Passport: Secure and Adoptable Source Authentication [PDF]
Xin Liu, Ang Li, Xiaowei Yang, and David Wetherall
USENIX/ACM Symposium on Networked Systems Design and Implementation, Apr. 2008.

A system that allows the network to efficiently authenticate the source address of each packet and prevent source-spoofing attacks.

On Improving the Efficiency and Manageability of NotVia [PDF|TALK]
Ang Li, Pierre Francois, and Xiaowei Yang
ACM International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Dec. 2007.

A few useful tricks to make IP fast rerouting more practical for large networks

Last modified: 08/2011