✅ //⭐️input: //20 //⭐️output: //8 🔵 ThingsILearned ✔️ 🟢 🟢

✅ Concurrency Issue Complex issue related to concurrent purchases of a popular product with limited stock. Multiple users attempted to buy the last few units of the product simultaneously, leading...

🔴 From user role list, I want to get just one role as String 유저롤 리스트에서 역할 하나만 스트링으로 받고 싶다 🟡 Identify error Each user has a user role list. The user will have just one role, but the role is sav...

✅ //⭐️input: //20 //⭐️output: //8 🔵 ThingsILearned ✔️ 🟢 🟢

✅ //⭐️input: //20 //⭐️output: //8 🔵 ThingsILearned ✔️ 🟢 🟢

✅ //⭐️input: //20 //⭐️output: //8 🔵 ThingsILearned ✔️ 🟢 🟢

✅ 메인페이지 로딩이 느린 문제 카테고리는 빠른데 메인페이지 3초 걸림 ✅ 인스턴스 끊기는 문제 nohup.out 확인하기 tail -n 100 nohup.out logback log4j OOM

✅ swagger v3 🔴 HTTPS CORS error However, there kept happening a CORS error 🔵 What I tried In browser, I was using https. However, the generated server url in swagger seemed to be http So I ...

🔴 Instance connection problem After 5~6 hours after deployment with nohup, at some point the connection was lost. 🟠 Situation Analysis EC2 Instance in AWS was running without problem. c...

✅ //⭐️input: //20 //⭐️output: //8 🔵 ThingsILearned ✔️ 🟢 🟢