Congcong Miao
Senoir Researcher/Engineer
Network Research in Tencent
Email: mccmiao [@] 163 [DOT] com
Research Areas: Machine learning, Computer Systems & Networking, Cloud computing
Research interest
My research aims at building high-performance and reliable networking systems for various cloud applications, such as large language model and big data analytics in the hyper-scale and complex cloud. Towards this vision, my research takes a cross-layer approach to co-design different stacks of the networking system: from hardware and software disaggregation to hardware-software co-design, from optical physical layer to cloud network layer, from mathematical methodology to network system implementation.
Some highlights are:
Wide Area Networks: Cross-Layer (Application/IP/Optical) Resource Allocation and Traffic Engineering
- MirrorNet [NSDI 2026]: a twin of the production network for daily management.
- PreTE [SIGCOMM 2025]: a novel traffic engineering system which factors in the dynamic fiber cut probabilities directly through prediction.
- MegaTE [SIGCOMM 2024]: the first TE system that manages fine-grained flows between millions of VMs or containers.
- FlexWAN [SIGCOMM 2023]: a hardware-software optical system that supports reconfigurable fiber spectrum allocation for wide-area networks.
- OpTel [NSDI 2022]: a first optical telemetry system that collect production-level optical layer data at one-second granularity.
- MPCCS [Eurosys 2026]: exploit scale-up and scale-out networks for LLM training.
- Holmes [NSDI 2025]: a first system focusing on irregularities (instead of failures) during LLM training.
- P-ECMP [NSDI 2025]: leveraging ECMP programmability for precise traffic control.
- Turbo [SIGCOMM 2024]: an efficient communication framework for big data system consisting of hundreds to thousands of nodes.
- LADR [NSDI 2026]: combining loss avoidance, detection, and recovery to reducing video frame loss in cloud gaming.
- Fornax [SIGCOMM 2025]: shifting management paradigm from software-centric to hardware-centric architecture.
- Tensor [SIGCOMM 2023]: a lightweight approach to implementing BGP non-stop routing.
- Octans [TPDS 2021]: a high-performance service function chains in many-Core Systems.
- Quicksync [Mobicom 2015]: an efficient synchronization system for mobile cloud storage.
Short Bio
I am a senior researcher/engineer (full time) focusing on Computer Systems & Networking in Tencent. Before join Tencent, I spent five wonderful years at Department of Computer Science and Technology in Tsinghua University, under the supervision of Prof. Jilong Wang.
News
- (Paper) MPCCS accepted to Eurosys'26. Congratulations!
- (Paper) PreTE accepted to SIGCOMM'25. Congratulations!
- (Paper) MirrorNet and LADR accepted to NSDI'26. Congratulations!
- (Paper) Ares accepted to SECURITY'25. Congratulations!
- (Paper) Fornax accepted to SIGCOMM'25. Congratulations!
- (Service) I will serve on the PC for SIGCOMM NGNO and FMANO workshop. Please consider to submit!
- (Service) I'll serve on the PC for NSDI'26. Please consider to submit!
- (Paper) Holmes and P-ECMP accepted to NSDI'25. Congratulations!
- (Paper) MegaTE and Turbo accepted to SIGCOMM'24. Congratulations!
- (Service) I will serve on the PC for SIGCOMM HotOptics and FMANO workshop. Please consider to submit!
- (Service) I'll serve on the PC for NSDI'25. Please consider to submit!
Reviewing Experiences
Technical Program Commitee: NSDI 2026, NSDI 2025, Globecom 2024, ECML/PKDD 2021, ECML/PKDD 2022
Publications (Selected | Full List)
