I'm looking for research scientist/postdoc positions.

About me

I'm a PhD candidate in Department of Computer Science, Emory University, advised by Prof. Ymir Vigfusson

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.


Distributed Tracing Through Retrospective Logging.
Under Review.

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

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.


Research Assistant, Georgia Tech

Teaching Assistant, Georgia Tech
Fall 2016

CS 3210: Design Operating Systems

Intern, Facebook Inc.
Summer 2018

Video cache infra team

Research Assistant, Emory University

Teaching Assistant, Emory University
Fall 2020

CS 377: Database Systems

Service & Award

External Reviewer
SRDS'18, SOCC'18, EuroSys'19

HotCloud'20, HotStorage'20, ATC'21

Travel Grant
NSDI'20, FAST'20

Best Student Paper Award

Bronze medal
24th, 25th China Mathematical Olympiad