request 완료: 00:00:00.8286902
request 완료: 00:00:00.8027937
request 완료: 00:00:00.7797469

async
-----

reques 완료: 00:00:01.2412722
reques 완료: 00:00:01.1789155
reques 완료: 00:00:01.3162635


조금만 작업했는데도 속도 차이가나네 ㅋㅋ 다작업하면 2배넘게차이날듯