expressjs 4.0 마이그레이션
Read Original익스프레스 4.x는 이전버전 대비 20%로 응답속도를 개선할 수 있다고 한다.(참고) 정말 그럴까? 익스프레스 적용 전과 후의 서버에 AB 테스로 성능 비교를 해봤다. Connection Times (ms) Connect: 3.x (238 ms), 4.x (209 ms, 0.88배 단축) Processing: 3.x (196 ms), 4.x (185 ms, 0.94배 단축) Waiting: 3.x (196 ms), 4.x (184 ms, 0.94배 단축) Total: 3.x (495 ms), 4.x (411 ms, 0.9배 단축) CPU Utilization (%) 기존대비 약 10% 응답속도가 빨라졌다. 기존에 간헐적으로 발생했던 응답 실패도 없었다. 또한 CPU 사용율도 개선(22% -> 16%)된듯 하
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