Yingjia Wang 王英嘉

I am a Postdoctoral Research Fellow at The Chinese University of Hong Kong (CUHK), working with Prof. Ming-Chang Yang.

I study how storage systems should evolve as new device interfaces expose more control while cloud-native platforms abstract away more infrastructure. I am especially drawn to problems that emerge when new abstractions meet mature storage stacks, where long-standing assumptions and boundaries no longer hold.

I obtained my Ph.D. from CUHK in 2026 and my B.Eng. from Huazhong University of Science and Technology (HUST) in 2022.

Yingjia Wang standing by the sea

Research

My current research centers on redesigning storage systems for evolving abstractions at both device and cloud levels.

At the device level, I study emerging storage abstractions, including Zoned Namespace (ZNS), Flexible Data Placement (FDP), and computational storage, that expose new capabilities and reshape the division of responsibilities between host software and storage devices. I design new interfaces and cross-layer mechanisms to make these capabilities truly practical for storage engines and data systems.

At the cloud level, I study cloud-native storage systems and services, including multi-tenant serverless databases and elastic block storage. My goal is to provide predictable performance and high resource efficiency in storage engines, even under elastic scaling, resource sharing, and limited visibility into the underlying infrastructure.

Selected Publications

Full list ↗

Zoned Storage & Computational Storage

  1. Boosting ZNS SSD Write Performance with Zora

    Yingjia Wang, Yuhong Liang, Zhisheng Hu, and Ming-Chang Yang

    Accepted and to appear in ACM Transactions on Storage (TOS)

  2. Reviving In-Storage Hardware Compression on ZNS SSDs through Host-SSD Collaboration

    Yingjia Wang, Tao Lu, Yuhong Liang, Xiang Chen, and Ming-Chang Yang

    IEEE International Symposium on High-Performance Computer Architecture (HPCA), Las Vegas, NV, USA, March 1–5, 2025

  3. Land of Oz: Resolving Orderless Writes in Zoned Namespace SSDs

    Yingjia Wang, You Zhou, Fei Wu, Jie Zhang, and Ming-Chang Yang

    IEEE Transactions on Computers (TC), vol. 73, no. 11, pp. 2520–2533, November 2024

  4. ZnH2: Augmenting ZNS-based Storage System with Host-Managed Heterogeneous Zones

    Yingjia Wang, Lok Yin Chow, Xirui Nie, Yuhong Liang, and Ming-Chang Yang

    ACM/IEEE International Conference on Computer-Aided Design (ICCAD), New York, NY, USA, October 27–31, 2024

Key-Value Storage for Cloud-Native Databases & New Hardware

  1. Making LSM-Tree-based Key-Value Store Practical and Efficient for Multi-Tenant Serverless Cloud Databases

    Yingjia Wang, Caixin Gong, Guoyun Zhu, Sheng Wang, Zhengheng Wang, Huan Liu, Junzhi Shi, Wu Qin, Wei Zhang, Feifei Li, and Ming-Chang Yang

    ACM SIGMOD International Conference on Management of Data (SIGMOD), Bengaluru, India, May 31–June 5, 2026

  2. ZonesDB: Building Write-Optimized and Space-Adaptive Key-Value Store on Zoned Storage with Fragmented LSM Tree

    Yuhong Liang, Yingjia Wang, Tsun-Yu Yang, Matias Bjørling, and Ming-Chang Yang

    ACM Transactions on Storage (TOS), vol. 21, no. 2, article 17, pp. 1–24, May 2025

Cloud Storage Performance Characterization

  1. Black-Box Performance Evaluation of Elastic Block Storage: Contract, Rate-Limiting Model, and Software Exploration

    Yingjia Wang and Ming-Chang Yang

    arXiv, under review

  2. The Unwritten Contract of Cloud-based Elastic Solid-State Drives

    Yingjia Wang and Ming-Chang Yang

    ACM/IEEE The Chips to Systems Conference (DAC), San Francisco, CA, USA, June 22–25, 2025

Services

  • Program Committee Member, The 18th International Conference on Networking, Architecture, and Storage (NAS 2026).
  • Reviewer, IEEE Transactions on Computers (TC).
  • Reviewer, IEEE Transactions on Parallel and Distributed Systems (TPDS).

Selected Awards

  • ACM/IEEE CASES Best Paper Award (1 out of 73 submissions), 2025.
  • HUST Honorary Bachelor's Degree (top 3%), 2022.
  • HUST Outstanding Undergraduate (top 1% in academic performance), 2020.
  • National Scholarship, 2020.