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yuhandemian/README.md

Hi, I'm Yuhan Park πŸ‘‹

I’m diving deep into backend development, focusing on scalable and high-performance systems.
Recently, I’ve been exploring distributed system design to understand how large architectures behave under load.


πŸ“¬ Contact

Email | LinkedIn


πŸ› οΈ Tech Stack

Backend

Database & Cache

Infra



πŸš€ Projects

🎬 λͺ¨λ‘μ˜ ν”Œλ¦¬

  • Period: 2025.12 – 2026.01
  • Role: Team Lead / Backend Developer
  • Tech: Spring Boot, JPA, QueryDSL, Redis, MySQL, AWS ECS, Docker, Prometheus, Grafana
  • Highlights:
    • PrometheusΒ·Grafana 기반 μ„œλΉ„μŠ€ λͺ¨λ‹ˆν„°λ§ ꡬ성
    • Cursor Pagination & Subscription Query Optimization
      • μ‹€ν–‰κ³„νš 뢄석을 톡해 μ •λ ¬ 기반 λͺ©λ‘ 쑰회 및 ꡬ독 쑰회 쿼리 병λͺ© 식별
      • UpdatedAt / SubscriberCount / CreatedAt κΈ°μ€€ 볡합 인덱슀 섀계
      • 평균 μ‘λ‹΅μ‹œκ°„ 90.3% κ°μ†Œ, P99 91.6% κ°μ†Œ
      • TPS 35.8% 증가, Tail Latency κ°œμ„ 
  • πŸ”— GitHub

πŸ€– λ―Έμ–΄μΊ£AI

  • Period: 2025.03 – 2025.09
  • Role: Team Lead / Backend Developer
  • Tech: Spring Boot, FastAPI, MySQL, AWS, Nginx
  • Highlights:
    • μ‹€μ‹œκ°„ AI μΆ”λ‘  μ„œλ²„(FastAPI)와 Spring Boot λ°±μ—”λ“œ 뢄리 섀계
    • RTSP 연동 μ‹€ν™˜κ²½μ—μ„œ μΆ”λ‘  정확도 μ €ν•˜ 문제 λ°œμƒ
    • CCTV μž…λ ₯(30fps)κ³Ό λͺ¨λΈ ν•™μŠ΅ 데이터(3fps) κ°„ ν”„λ ˆμž„ 레이트 뢈일치 원인 규λͺ…
    • Frame Sampling Filter μ„€κ³„λ‘œ μž…λ ₯ μ‹œκ³„μ—΄μ„ ν•™μŠ΅ 데이터 기쀀에 동기화
    • μ‹€ν™˜κ²½μ—μ„œλ„ ν…ŒμŠ€νŠΈ ν™˜κ²½κ³Ό μœ μ‚¬ν•œ μΆ”λ‘  정확도 확보
  • πŸ”— GitHub | Demo

πŸ“° λͺ¨λ‰΄

  • Period: 2025.10 – 2025.11
  • Role: Team Lead / Backend Developer
  • Tech: Spring Boot, Spring Batch, JPA, Redis, PostgreSQL, MongoDB, AWS ECS, S3, Docker
  • Highlights:
    • Spring Batch 기반 λ‰΄μŠ€ μˆ˜μ§‘ μžλ™ν™” (OpenAPI, RSS)
    • Redis 쑰회수 쀑볡 λ°©μ§€ 및 μž₯μ•  λŒ€λΉ„ Fallback 둜직
  • πŸ”— GitHub

πŸ“Š Findex

  • Period: 2025.09
  • Role: Backend Developer
  • Tech: Spring Boot, JPA, QueryDSL, PostgreSQL, Docker
  • Highlights:
    • μ§€μˆ˜ μ‘°νšŒΒ·ν•„ν„°Β·μ •λ ¬ API 및 μ„±κ³Ό λž­ν‚Ή 둜직 κ΅¬ν˜„
  • πŸ”— GitHub

πŸ’‘ Personal Projects

πŸ“š CS Wiki - μΈν„°λž™ν‹°λΈŒ CS ν•™μŠ΅ ν”Œλž«νΌ

  • Tech: Next.js, TypeScript, D3.js, Lunr.js
  • Features:
    • D3 Force Graph둜 97개 CS κ°œλ… 관계 μ‹œκ°ν™”
    • ν΄λΌμ΄μ–ΈνŠΈ μ „λ¬Έ 검색 (μ„œλ²„λ¦¬μŠ€)
    • Static Export + GitHub Pages 배포
  • πŸ”— GitHub | Demo

πŸ’Ž Achievements
  • πŸ† 2025 SWμ€‘μ‹¬λŒ€ν•™ μš°μˆ˜μž‘ν’ˆ κ²½μ§„λŒ€νšŒ β€” μš°μˆ˜μƒ(μ†Œν”„νŠΈμ›¨μ–΄μ€‘μ‹¬λŒ€ν•™ ν˜‘μ˜νšŒμž₯상)
    λ―Έμ–΄μΊ£AI: AI 기반 무인점포 이상행동 감지 μ‹œμŠ€ν…œ

  • 주졜: κ³Όν•™κΈ°μˆ μ •λ³΄ν†΅μ‹ λΆ€

  • μ£Όκ΄€: IITP(μ •λ³΄ν†΅μ‹ κΈ°νšν‰κ°€μ›), SWμ€‘μ‹¬λŒ€ν•™ν˜‘μ˜νšŒ

  • μ°Έμ—¬ 규λͺ¨: μ „κ΅­ 58개 λŒ€ν•™ λŒ€ν‘œνŒ€

  • μΆœμ „: μ„Έμ’…λŒ€ν•™κ΅ λŒ€ν‘œ

  • μ—­ν• : νŒ€μž₯ / λ°±μ—”λ“œ 개발

πŸ”— References

πŸ” Demo Account
Demo credentials are available upon request.

  • πŸ₯‡ Top Prize(1st Place): 2025 μ„Έμ’…λŒ€ν•™κ΅ μ°½μ˜μ„€κ³„κ²½μ§„λŒ€νšŒ μ΅œμš°μˆ˜μƒ
    β†’ MeerkatAI / Team Lead & Backend Developer

πŸ“° Media Coverage
  • [SWμ€‘μ‹¬λŒ€ν•™ 10μ£Όλ…„] μ „κ΅­ 58개 λŒ€ν•™ SW μš°μˆ˜μž‘ν’ˆ κ²½μ§„λŒ€νšŒ

  • ꡬ윀철 뢀총리, μ„Έμ’…λŒ€ AI μ—­λŸ‰κ°•ν™” ν˜„μž₯ λ°©λ¬Έ


🌱 Education

  • SEJONG UNIVERSITY β€” B.S. Computer Engineering (Mar 2023 – Aug 2025)

πŸ“˜ Professional Training

  • Codeit Sprint β€” Backend Developer Program (Jul 2025 – Jan 2026)

Pinned Loading

  1. Capstone-project-team7/Back Capstone-project-team7/Back Public

    Java

  2. monew monew Public

    Forked from codeit-monew/sb05-monew-team7

    Java