Hi, I'm Linwei Zhang (usually known as lewiszlw online):

• 🎓 CS graduate from WHUT
• 👨‍💻 Formerly at Meituan / Amazon / Xiaomi
• 💻 Database engineer | Apache DataFusion committer | Open-source enthusiast
• 📦 My open-source projects are mainly at @systemxlabs and @NightsWatchGames
• 📄 Resume: 中文
• 📱 Reach me: 📫 lewiszlw520@gmail.com | 💬 Wechat: wx597422850
• Twitter | 知乎 | Bilibili | Youtube

🎖️ Open source contributions

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🔨 Check out my recent pull requests

• refactor: extract flush_index_builders helper on systemxlabs/indexlake (3 days ago)
• feat: push down update condition to catalog scan for inline rows on systemxlabs/indexlake (3 days ago)
• feat: unify inline row update to scan + filter + row_id targeted UPDATE on systemxlabs/indexlake (4 days ago)
• feat: selective rebuild inline indexes on update on systemxlabs/indexlake (4 days ago)
• feat: skip inline index rebuild when updating non-index columns on systemxlabs/indexlake (5 days ago)
• [TEST] Core changes only on systemxlabs/indexlake (5 days ago)
• feat: selective rebuild inline indexes on update (phase 1) on systemxlabs/indexlake (5 days ago)
• Revert "feat: selective rebuild inline indexes on update (phase 1)" on systemxlabs/indexlake (5 days ago)
• feat: selective rebuild inline indexes on update (phase 1) on systemxlabs/indexlake (5 days ago)
• fix: adapt jieba-rs 0.10.0 API changes on systemxlabs/indexlake (1 week ago)

👷 Check out what I'm currently working on

• systemxlabs/indexlake - An experimental table format with extensible index and inline table support. (3 days ago)
• systemxlabs/datafusion-dist - A distributed streaming execution library for Apache DataFusion. (1 week ago)
• systemxlabs/datafusion-remote-table - A DataFusion table provider for executing SQL on remote databases. (1 week ago)
• systemxlabs/datafusion-loki - A datafusion table provider for querying loki data. (2 weeks ago)
• systemxlabs/systemxlabs.github.io - (3 weeks ago)

⭐ Check out my recent stars

• djc/bb8 - Full-featured async (tokio-based) postgres connection pool (like r2d2) (1 month ago)
• corespeed-io/wechatbot - 微信 iLink Bot SDK for OpenClaw/AI Agent (1 month ago)
• he-yufeng/CoreCoder - Minimal AI coding agent (~1,400 LoC Python) inspired by Claude Code. Works with any LLM. Think NanoGPT for coding agents. Formerly NanoCoder. (2 months ago)
• 1ffycat/telegram-cli - A Rust CLI tool to interact with a Telegram bot (2 months ago)
• jackwener/OpenCLI - Make Any Website into CLI & Use your logged-in browser by AI agent. (2 months ago)

📜 Check out my recent blog posts

• 开源 datafusion-remote-table 库：在远端数据库执行 SQL 查询 (1 year ago)
• Visitor 模式的两种不同实现分析 (1 year ago)
• DataFusion 查询引擎 Hash Join (1 year ago)
• DataFusion 查询引擎 Nested Loop Join (1 year ago)
• Rust 异步运行时 smol 剖析 (2 years ago)