About

I do various things:

• I’m currently working with Martin Kleppmann on conflict-free replicated data types (CRDT).
• I developed an easy-to-understand and formally verified implementation of Raft consensus algorithm named Raft Lite.
• I developed several distributed database systems, including LLRStore, a Dynamo-like KV database, and StorgataDB, a distributed RESP-compatible database using Raft.
• I developed a bitcask storage engine in Rust, a log-structured hash table for key-value storage, supporting compaction and crash recovery.
• I was a software engineer at Tencent in WeChat Group from 2021 to 2022.

Talks and Papers

• Talk at Cambridge University Security Seminar: Design and Verification of Byzantine Fault Tolerant CRDTs, 15 November 2024. [slides]
• Liangrun Da and Martin Kleppmann. Extending JSON CRDTs with Move Operations. The 11th Workshop on Principles and Practice of Consistency for Distributed Data (PaPoC ’24), April 2024. [paper] [slides] [project page]
• Talk at Programming Local-first Software in SPLASH 2023: Extending Automerge: Undo, Redo, and Move, October 2023.