Junsong Pu is a master’s student at the School of Software Engineering, Sun Yat-sen University, under the supervision of Dr. Zhuangbin Chen (expected graduation: 2028). Prior to that, he received his B.S. degree from the School of Computer Science (National Pilot Software Engineering School), Beijing University of Posts and Telecommunications. His research focuses on distributed systems reliability.

Publications

• [ASE 25] ErrorPrism: Reconstructing Error Propagation Paths in Cloud Service Systems

  Junsong Pu, Yichen Li, Zhuangbin Chen*, Jinyang Liu, Zhihan Jiang et al.

• [ASE 25] Automated Proactive Logging Quality Improvement for Large-Scale Codebases

  Yichen Li, Jinyang Liu, Junsong Pu, Zhihan Jiang, Zhuangbin Chen et al.

• [ISSTA 25] Tracezip: Efficient Distributed Tracing via Trace Compression

  Zhuangbin Chen, Junsong Pu, Zibin Zheng*

Open source contributions

• cloudwego/abcoder

  ABCoder is a codebase indexing toolset specifically designed for Large Language Models (LLMs). By deeply parsing code into a function-level graph structure, it constructs an LLM-friendly Graph RAG system. Unlike traditional vector-based retrieval, ABCoder preserves call chains and logical relationships, significantly enhancing an LLM Agent’s retrieval precision and contextual awareness within complex codebases.

  I mainly participated in the development of the TypeScript Parser component.