Research Interest

My research interest is widely on distributed systems, including from theoretical performance analysis to design and verification of distributed systems. Many of my recent works especially focus on caching systems and distributed tracing systems.


I received my bachelor degree in Computer Science and Technology (2015) from Tsinghua University, and master degree (2017) in Computer Science from Georgia Tech. I was once a CS Ph.D. student at Georgia Tech, working with Prof. Karsten Schwan   (memorial page) and Prof. Doug Blough . I transferred to Emory in 2018 as a post-qualified Ph.D. student.


When is the Cache Warm? Manufacturing a Rule of Thumb

Lei Zhang, Juncheng Yang, Anna Blasiak, Mike McCall, Ymir Vigfusson
In USENIX HotCloud 2020
paper   slides   video(youtube)

Optimal Data Placement for Heterogeneous Cache, Memory, and Storage Systems

Lei Zhang, Reza Karimi, Irfan Ahmad, Ymir Vigfusson
paper   video
Kenneth C. Sevcik Outstanding Student Paper Award

Deceptive Secret Sharing

Lei Zhang, Douglas Blough
In IEEE International Conference on Dependable Systems and Networks (DSN) 2018

Systematic Data Placement Optimization in Multi-Cloud Storage for Complex Requirements

Maomeng Su, Lei Zhang, Yongwei Wu, Kang Chen, Keqin Li
In IEEE Transactions on Computers 2016, 65(6): 1964-1977.

Under Preparation

Distributed Tracing Through Retrospective Logging.