https://roobystudio.com/Tech Consultant & Trance Producer. Exploring code, music, and life. 2026-10-07T23:53:16+08:00 Boyu Li https://roobystudio.com/ Jekyll © 2026 Boyu Li /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-10-07T16:40:00+08:00 2026-10-07T16:40:00+08:00 https://roobystudio.com/posts/how-pi-works/ boyu

I used Cursor with auto models and never thought about customization. Then I discovered Pi's extension system. Here's the architecture diagram I wish I had on day one.

2026-10-07T15:50:00+08:00 2026-10-07T15:55:11+08:00 https://roobystudio.com/posts/understanding-compaction-in-pi/ boyu

Compaction is Pi's intelligent context management system that summarizes older messages to free up context space. But why does it exist, and why is it exposed as an explicit /compact command instead of working invisibly? Let's explore the design philosophy behind this feature.

2026-09-06T18:00:00+08:00 2026-09-06T18:00:00+08:00 https://roobystudio.com/posts/nodejs-is-electricity/ boyu

Node.js isn't a language or a framework — it's the runtime that took JavaScript from a browser-only scripting language to a universal platform. Here's what it is, how the event loop works, and what you need to know for interviews.

2026-09-06T14:30:00+08:00 2026-09-06T15:22:18+08:00 https://roobystudio.com/posts/trance-3es-energy-euphoria-emotion/ boyu

Trance job in three words — Energy, Euphoria, Emotion. A floor-simple map you can use while listening, mixing, or arranging.

2026-09-05T18:30:00+08:00 2026-09-06T15:22:18+08:00 https://roobystudio.com/posts/compounding-system/ boyu

Compounding isn't magic interest — it's a loop we can design. The core model of a compounding system, and how to build one that keeps paying me back.