Qing Wang | Systems

About Me

I am a tenure-track Associate Professor at Nanjing University. I received my Ph.D. degree from Tsinghua University in 2023 (Advisor: Prof. Jiwu Shu), and Bachelor's degree from Huazhong University of Science and Technology in 2018. From 2023 to 2025, I worked as a Postdoctoral Researcher at Tsinghua University.

Prospective students: We are seeking highly motivated PhD students, Master’s students, and interns. If you're passionate about system research and interested in working with me, please feel free to reach out via email.

Research

My research focuses on computer systems, particularly storage/memory systems and networked systems.
The research topics I am currently interested in include:

Distributed systems with memory-semantic interconnects
System support for petabyte-scale memory
Data management for Agentic AI
Sustainable cloud storage

Here are some of my representative research projects:

Network-Accelerated Distributed Systems
- Leveraging NIC hardware ACKs for fast commit (NSDI'25)
- Network primitives for replication (OSDI'23)
- Distributed locks (FAST'25, FAST'23)
- Transactions (USENIX ATC'22, VLDB'22)
- In-network cache coherence (FAST'21)
Emerging Memory Systems
- Index on disaggregated memory (EuroSys'25, SIGMOD'22)
- Persistent memory systems (OSDI'21, USENIX ATC'22/ATC'23)
- SSD-extended remote memory (FAST'24)
- Protective remote memory (FAST'23)

Publications

2026

[FAST'26] Cost-efficient Archive Cloud Storage with Tape: Design and Deployment
Qing Wang*, Fan Yang*, Qiang Liu, Geng Xiao, Yongpeng Chen, Hao Lan, Leiming Chen, Bangzhu Chen, Chenrui Liu, Pingchang Bai, Bin Huang, Zigan Luo, Mingyu Xie, Yu Wang, Youyou Lu, Huatao Wu, Jiwu Shu
The 24th USENIX Conference on File and Storage Technologies, 2026
[ICDE'26] Switch∆: Asynchronous Metadata Updating for Distributed Storage with In-Network Data Visibility
Junru Li, Qing Wang, Zhe Yang, Shuo Liu, Jiwu Shu, Youyou Lu
The 42nd IEEE International Conference on Data Engineering, 2026

2025

[NSDI'25] Achieving Wire-Latency Storage Systems by Exploiting Hardware ACKs
Qing Wang, Jiwu Shu, Jing Wang, Yuhao Zhang
The 22nd USENIX Symposium on Networked Systems Design and Implementation, 2025
[CACM] Designing an Efficient Tree Index on Disaggregated Memory [Code]
Qing Wang, Youyou Lu, Jiwu Shu
Communications of the ACM, 2025 (Research Highlight)
[SoCC'25] Accelerating Distributed Filesystem Metadata Service via Decoupling Directory Semantics from Metadata Indexing
Wenhao Lv, Hao Guo, Qing Wang, Youyou Lu, Jiwu Shu
ACM Symposium on Cloud Computing, 2025
[USENIX ATC'25] Weaver: Efficient Multi-LLM Serving with Attention Offloading
Shiwei Gao, Qing Wang, Shaoxun Zeng, Youyou Lu, Jiwu Shu
USENIX Annual Technical Conference, 2025
[FAST'25] ShiftLock: Mitigate One-sided RDMA Lock Contention via Handover [Code]
Jian Gao, Qing Wang, Jiwu Shu
The 23rd USENIX Conference on File and Storage Technologies, 2025 (Distinguished Artifact Award)
[EuroSys'25] Deft: A Scalable Tree Index for Disaggregated Memory [Code]
Jing Wang, Qing Wang, Yuhao Zhang, Jiwu Shu
The 20th European Conference on Computer Systems, 2025
[TOS] Efficiently Enlarging RDMA-Attached Memory with SSD [Code]
Zhe Yang, Qing Wang, Xiaojian Liao, Youyou Lu, Keji Huang, Jiwu Shu
ACM Transactions on Storage, 2025 (Fast-tracked)
[TC] StageWise: Accelerating Persistent Key-Value Stores by Thread Model Redesigning
Zeqi Li, Youmin Chen, Qing Wang, Youyou Lu, Jiwu Shu
IEEE Transactions on Computers, 2025
[HotStorage'25] CableCache: In-Network Request Deduplication for Key-Value Stores
Jiawei Huang, Junru Li, Qing Wang, Lijie Wen, Youyou Lu, Erci Xu
The 17th ACM Workshop on Hot Topics in Storage and File Systems, 2025

2024

[FAST'24] TeRM: Extending RDMA-Attached Memory with SSD [Code]
Zhe Yang, Qing Wang, Xiaojian Liao, Youyou Lu, Keji Huang, Jiwu Shu
The 22nd USENIX Conference on File and Storage Technologies, 2024
Invited for fast-tracked publication in ACM Transactions on Storage
[TOS] Perseid: A Secondary Indexing Mechanism for LSM-based Storage Systems [Code]
Jing Wang, Youyou Lu, Qing Wang, Yuhao Zhang, Jiwu Shu
ACM Transactions on Storage, 2024 (Fast-tracked)
Challenges and Technical Development of Large Model Training Storage Systems
Yangyang Feng, Qing Wang, Minhui Xie, Jiwu Shu
Journal of Computer Research and Development (in Chinese), 2024

2023

[OSDI'23] Replicating Persistent Memory Key-Value Stores with Efficient RDMA Abstraction [Code]
Qing Wang, Youyou Lu, Jing Wang, Jiwu Shu
The 17th USENIX Symposium on Operating Systems Design and Implementation, 2023
[SIGMOD Record] Building Write-Optimized Tree Indexes on Disaggregated Memory [Code]
Qing Wang, Youyou Lu, Jiwu Shu
SIGMOD Record, March 2023 (Vol. 52, No. 1), 2023 (Invited)
[USENIX ATC'23] Revisiting Secondary Indexing in LSM-based Storage Systems with Persistent Memory [Code]
Jing Wang, Youyou Lu, Qing Wang, Yuhao Zhang, Jiwu Shu
USENIX Annual Technical Conference, 2023
Invited for fast-tracked publication in ACM Transactions on Storage
[FAST'23] Patronus: High-Performance and Protective Remote Memory [Code]
Bin Yan, Youyou Lu, Qing Wang, Minhui Xie, Jiwu Shu
The 21st USENIX Conference on File and Storage Technologies, 2023
[FAST'23] Citron: Distributed Range Lock Management with One-sided RDMA
Jian Gao, Youyou Lu, Minhui Xie, Qing Wang, Jiwu Shu
The 21st USENIX Conference on File and Storage Technologies, 2023
[VLDB'23] PetPS: Supporting Huge Embedding Models with Persistent Memory [Code]
Minhui Xie, Youyou Lu, Qing Wang, Yangyang Feng, Jiaqiang Liu, Kai Ren, Jiwu Shu
The 49th International Conference on Very Large Data Bases, 2023
Survey on In-Network Storage Systems
Qing Wang, Junru Li, Jiwu Shu
Journal of Computer Research and Delevopment (in Chinese), 2023
Progress on Storage Systems for Disaggregated Data Centers
Jiwu Shu, Youmin Chen, Qing Wang, Jing Wang, Junru Li, Xiaojian Liao
SCIENTIA SINICA Informationis (in Chinese), 2023

2022

[SIGMOD'22] Sherman: A Write-Optimized Distributed B+Tree Index on Disaggregated Memory [Code]
Qing Wang, Youyou Lu, Jiwu Shu
ACM SIGMOD International Conference on Management of Data, 2022
2023 ACM SIGMOD Research Highlight Award, CACM Research Highlight
[TOS] Nap: Persistent Memory Indexes for NUMA Architectures [Code]
Qing Wang, Youyou Lu, Junru Li, Minhui Xie, Jiwu Shu
ACM Transactions on Storage, 2022 (Fast tracked)
[USENIX ATC'22] AlNiCo: SmartNIC-accelerated Contention-aware Request Scheduling for Transaction Processing
Junru Li, Youyou Lu, Qing Wang, Jiazhen Lin, Zhe Yang, Jiwu Shu
USENIX Annual Technical Conference, 2022
[USENIX ATC'22] Pacman: An Efficient Compaction Approach for Log-Structured Key-Value Store on Persistent Memory [Code]
Jing Wang, Youyou Lu, Qing Wang, Minhui Xie, Keji Huang, Jiwu Shu
USENIX Annual Technical Conference, 2022
[EuroSys'22] Fleche: An Efficient GPU Embedding Cache for Personalized Recommendations
Minhui Xie, Youyou Lu, Jiazhen Lin, Qing Wang, Jian Gao, Kai Ren, Jiwu Shu
The 17th European Conference on Computer Systems, 2022
[VLDB'22] SwitchTx: Scalable In-Network Coordination for Distributed Transaction Processing
Junru Li, Youyou Lu, Yiming Zhang, Qing Wang, Zhuo Cheng, Keji Huang, Jiwu Shu
The 48th International Conference on Very Large Data Bases, 2022

2021

[OSDI'21] Nap: A Black-Box Approach to NUMA-Aware Persistent Memory Indexes [Code]
Qing Wang, Youyou Lu, Junru Li, Jiwu Shu
The 15th USENIX Symposium on Operating Systems Design and Implementation, 2021
Invited for fast-tracked publication in ACM Transactions on Storage
[FAST'21] Concordia: Distributed Shared Memory with In-Network Cache Coherence
Qing Wang, Youyou Lu, Erci Xu, Junru Li, Youmin Chen, Jiwu Shu
USENIX Conference on File and Storage Technologies, 2021
[TOS] Octopus+: an RDMA-enabled Distributed Persistent Memory File System
Bohong Zhu, Youmin Chen, Qing Wang, Youyou Lu, Jiwu Shu
ACM Transactions on Storage, 2021
[ICDE'21] Aria: Tolerating Skewed Workloads in Secure In-memory Key-value Stores
Fan Yang, Youmin Chen, Youyou Lu, Qing Wang, Jiwu Shu
37th IEEE International Conference on Data Engineering, 2021
A Multicore-Friendly Persistent Memory Key-Value Store
Qing Wang, Bohong Zhu, Jiwu Shu
Journal of Computer Research and Delevopment (in Chinese), 2021

2020

[DAC'20] Improving the Concurrency Performance of Persistent Memory Transactions on Multicores
Qing Wang, Youyou Lu, Zhongjie Wu, Fan Yang, Jiwu Shu
Design Automation Conference, 2020
[ASPLOS'20] FlatStore: an Efficient Log-Structured Key-Value Storage Engine for Persistent Memory
Youmin Chen, Youyou Lu, Fan Yang, Qing Wang, Yang Wang, Jiwu Shu
Proceedings of the 25th International Conference on Architectural Support for Programming Languages and Operating Systems, 2020
[VLDB'20] μTree: a Persistent B+-Tree with Low Tail Latency
Youmin Chen, Youyou Lu, Kedong Fang, Qing Wang, Jiwu Shu
46th International Conference on Very Large Data Bases, 2020
[TOS] TH-DPMS: Design and Implementation of an RDMA-enabled Distributed Persistent Memory Storage System
Jiwu Shu, Youmin Chen, Qing Wang, Bohong Zhu, Junru Li, Youyou Lu
ACM Transactions on Storage, 2020

Selected Awards

Distinguished Artifact Award, USENIX FAST 2025
CACM Research Highlight, 2025
ACM SIGMOD Research Highlight Award, 2023
Microsoft Research PhD Fellowship, 2021
Huawei OlympusMons Award, 2020