๋ถ์ฐ๋ฝ ํ๋์ ๊ณตํต๋ ์ ์ฅ์์์ ๋์ผํ ๋ฐ์ดํฐ์ ๋ํ ๋๊ธฐํ๋ฅผ ๋ณด์ฅ ๋๊ด๋ฝ & ๋น๊ด๋ฝ References https://unluckyjung.github.io/db/2022/03/07/Optimistic-vs-Pessimistic-Lock/