About
Hyung-Gyu Ryoo · 류형규
Section titled “Hyung-Gyu Ryoo · 류형규”Research engineer at CUBRID, an open-source DBMS. Most of my day-to-day is reading and modifying the storage engine — buffer manager, MVCC, lock manager, recovery — and writing down what I learn so the next person doesn’t have to re-derive it from source.
Before CUBRID I was at Pusan National University, where I did a B.S. and an integrated M.S./Ph.D. course in Computer Science and Engineering, working on 3D GIS and indoor spatial data modelling / analysis under STEMLab.
What I work on
Section titled “What I work on”- DBMS internals. Storage layer code — disk manager, page buffer, B+-tree, MVCC, locking, recovery. The kind of code that’s mostly invisible until something goes wrong at 3 AM.
- 3D GIS · spatial software. Mostly a previous chapter: 3D extensions for GeoServer / GeoTools, SFCGAL bindings, IndoorGML tooling. The open-source artifacts are still on GitHub.
- Writing. Code analyses and talk decks that try to make the implementation tractable to read. Linked from the home page.
Elsewhere
Section titled “Elsewhere”- GitHub: https://github.com/hgryoo
- LinkedIn: https://www.linkedin.com/in/hgryoo9264
- Email: hyunggyu.ryoo@gmail.com
This site
Section titled “This site”This is the root landing for a small set of related sites:
- Notes & Analyses — long-form code analyses (Starlight).
- Talks & Slides — talk decks (Marp HTML / PDF).
The site itself is built with Astro Starlight and hosted on GitHub Pages.