https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, and data engineering — plus mindset essays on confidence, routines, health, and sport psychology. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 15 Aug 2026 00:00:00 GMT https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring.en https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring.en This guide is about how to refactor safely, not when refactoring pays. Starting from the definition of refactoring, it walks through building a safety net with characterization tests, introducing seams into code you cannot touch, changing interfaces with parallel change, and cutting a large change into reversible pieces. It also covers how to verify automated refactorings and codemods, and how to decide when to stop. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리팩터링레거시코드테스트refactoringcharacterization-testcodemodparallel-change https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring.ja https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring.ja リファクタリングを「いつやるか」ではなく「どう安全にやるか」から扱います。定義の確認から始め、特性化テストで安全網を作り、触れないコードに継ぎ目を入れ、並行変更でインターフェースを差し替え、大きな変更を戻せる断片へ切り分ける手順を順番に整理します。自動リファクタリングとコードモッドの検証方法、そして止めどきを決める基準まで含みます。 Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리팩터링레거시코드테스트refactoringcharacterization-testcodemodparallel-change https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring https://www.youngju.dev/blog/architecture/2026-08-15-guide-refactoring 리팩터링을 언제 하느냐가 아니라 어떻게 안전하게 하느냐를 다룹니다. 리팩터링의 정의에서 출발해 특성화 테스트로 안전망을 만들고, 손댈 수 없는 코드에 접합부를 내고, 병렬 변경으로 인터페이스를 바꾸고, 큰 변경을 되돌릴 수 있는 조각으로 자르는 절차를 순서대로 정리합니다. 자동 리팩터링과 코드모드의 검증 방법, 그리고 멈출 때를 정하는 기준까지 포함합니다. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리팩터링레거시코드테스트refactoringcharacterization-testcodemodparallel-change