https://velog.io/@tjswodud/%EA%B3%B5%EB%A3%A1%EC%B1%85-%EA%B0%95%EC%9D%98-%EB%82%B4%EC%9A%A9-%EC%A0%95%EB%A6%AC-9.-Main-Memory
https://jyeonnyang2.tistory.com/77#google_vignette
https://jyeonnyang2.tistory.com/78
https://medium.com/@ioseunggi/second-chance-algorithm-9834eee634c8#:~:text=Second%20Chance%20Algorithm%EC%9D%80%20FIFO%EC%95%8C%EA%B3%A0%EB%A6%AC%EC%A6%98%EC%97%90%20%EA%B8%B0%EB%B0%98%EC%9D%84%20%EB%91%94,%EB%A5%BC%20%EC%96%BB%EA%B2%8C%EB%90%98%EB%8A%94%20%EC%95%8C%EA%B3%A0%EB%A6%AC%EC%A6%98%EC%9D%B4%EB%8B%A4.
https://jyeonnyang2.tistory.com/114
