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Achievement: YOLOAchievement: Starstruckx3Achievement: QuickdrawAchievement: Galaxy Brainx2Achievement: Arctic Code Vault Contributor

Achievements

Achievement: YOLOAchievement: Starstruckx3Achievement: QuickdrawAchievement: Galaxy Brainx2Achievement: Arctic Code Vault Contributor

Organizations

@cmu-db @sjtug @dyweb @tuna @tikv @iskyzh @SJTU-CSE @SJTU-Plus @neondatabase @untitled-group @HMUniversity @risinglightdb

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skyzh/README.md

Hi, I'm Chi, currently working @neondatabase. I spent most of my life in Shanghai, and now I'm living in Pittsburgh.

  • I'm maintaining RisingLight, an educational OLAP database system.
  • I worked on BusTub as a teaching assistant for @cmu-db's intro to database course when I was in Carnegie Mellon University.
  • I'm interested in exploring how to productively use the Rust programming language in data-intensive applications.
    • In mini-lsm, you will learn how to build a LSM-tree storage engine in Rust.
    • In type-exercise-in-rust, you will learn how to build a vectorized expression evaluation framework in database systems with Rust.
    • In write-you-a-vector-db, you will add vector extensions to a relational database system.

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  1. risinglightdb/risinglight Public

    An educational OLAP database system.

    Rust 1.7k 221

  2. cmu-db/bustub Public

    The BusTub Relational Database Management System (Educational)

    C++ 4.4k 1.9k

  3. mini-lsm Public

    A course of building an LSM-Tree storage engine (database) in a week.

    Rust 3.3k 466

  4. write-you-a-vector-db Public

    A Vector Database Tutorial (over CMU-DB's BusTub system)

    C++ 688 19

  5. tikv/tikv Public

    Distributed transactional key-value database, originally created to complement TiDB

    Rust 15.7k 2.2k

  6. neondatabase/neon Public

    Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.

    Rust 16.8k 530

1,809 contributions in the last year

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Contribution activity

April 2025

Created 24 commits in 1 repository

Created a pull request in neondatabase/neon that received 9 comments

fix(pageserver): avoid gc-compaction triggering circuit breaker

Problem There are some cases where traditional gc might collect some layer files causing gc-compaction cannot read the full history of the key. Thi…

+39 −11 lines changed • 9 comments
Opened 24 other pull requests in 1 repository
Reviewed 27 pull requests in 4 repositories

Created an issue in neondatabase/neon that received 2 comments

Image layer reader/writer efficiency wrt compression

I occasionally observe very slow image layer generation on pg_bench projects. That's probably because of the dataset of pg_bench contains a lot of …

2 comments
Opened 6 other issues in 1 repository
18 contributions in private repositories Apr 1 – Apr 17
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