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34 followers · 52 following
  • Naver Financial
  • South Korea
  • 21:38 (UTC +09:00)

Achievements

Achievement: Pair Extraordinairex2Achievement: Pull Sharkx3Achievement: YOLOAchievement: Quickdraw

Achievements

Achievement: Pair Extraordinairex2Achievement: Pull Sharkx3Achievement: YOLOAchievement: Quickdraw

Highlights

  • Pro

Organizations

@PoApper

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khkim6040/README.md

My Photo Header

Golden Gate Bridge at Sunset

Hi, I'm Gwanho Kim

  • ๐Ÿ”ง Backend Developer @Naver Financial
  • ๐Ÿ“š Graduate of @POSTECH Computer Science and Engineering
  • ๐Ÿš• Prior Lead Developer of PoApper
  • ๐Ÿ” Interested in Distributed Systems & Cloud Services

For my needs

Out of curiosity

  • GwanLang - Tree-walking interpreter written in Kotlin
  • Gwanbase - Relational database built from scratch in Kotlin, from disk I/O to SQL parser, transactions, and the PostgreSQL wire protocol
  • System Internals Study - Layer-by-layer deep dive into what a backend actually runs on
  • Browser Fingerprint Lab - What a web page learns about you with zero permissions
  • Concurrency Ticketing Lab - Toggle race conditions in a ticket booking system and watch consistency and throughput trade off

Pinned Loading

  1. system-internals-study system-internals-study Public

    Backend system internals study โ€” layer-by-layer deep dive into MongoDB, JVM, K8s, WebFlux, Prometheus and more