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

• feat(dist): batch process events with recv_many and merge duplicates on systemxlabs/datafusion-dist (1 day ago)
• Refactor network methods to batch handling on systemxlabs/datafusion-dist (1 day ago)
• refactor: return ApiError for invalid bot token on systemxlabs/wechat-cli (2 days ago)
• refactor: derive Eq alongside PartialEq for remaining core data types on systemxlabs/babata (6 days ago)
• refactor: derive Eq alongside PartialEq for core data types on systemxlabs/babata (1 week ago)
• fix(web): eliminate setState-in-effect ESLint violations on systemxlabs/babata (1 week ago)
• fix(build): auto-build web UI during cargo build to prevent stale dist on systemxlabs/babata (1 week ago)
• feat(web): adapt task logs UI to structured API on systemxlabs/babata (1 week ago)
• feat: switch logs to JsonLayout and type task logs API response on systemxlabs/babata (1 week ago)
• fix(http): make LogLevel::matches precise for logforth default format on systemxlabs/babata (1 week ago)

👷 Check out what I'm currently working on

• systemxlabs/datafusion-dist - A distributed streaming execution library for Apache DataFusion. (today)
• systemxlabs/wechat-cli - A CLI tool to interact with a Wechat iLink bot. (2 days ago)
• systemxlabs/babata - Agent System. (2 days ago)
• corespeed-io/wechatbot - 微信 iLink Bot SDK for OpenClaw/AI Agent (2 weeks ago)
• systemxlabs/indexlake - An experimental table format with extensible index and inline table support. (2 weeks ago)

⭐ Check out my recent stars

• djc/bb8 - Full-featured async (tokio-based) postgres connection pool (like r2d2) (2 weeks ago)
• corespeed-io/wechatbot - 微信 iLink Bot SDK for OpenClaw/AI Agent (3 weeks 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. (1 month ago)
• 1ffycat/telegram-cli - A Rust CLI tool to interact with a Telegram bot (1 month ago)
• jackwener/OpenCLI - Make Any Website & Tool Your CLI. A universal CLI Hub and AI-native runtime. Transform any website, Electron app, or local binary into a standardized command-line interface. Built for AI Agents to discover, learn, and execute tools seamlessly via a unified AGENT.md integration. (1 month 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 (1 year ago)