Hi, I’m Yuejun 👋

Welcome. I write about software engineering, systems programming, and the lessons I pick up while building and debugging real things. Browse the archives, search by tag, or read a bit about me.

Hello, and What This Blog Is

A short note on why this blog exists and what I plan to write here.

February 4, 2026 Â· 1 min Â· 173 words Â· Yuejun Sun