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| ## 3.2 MVCC 기반 (Multi-Version Concurrency Control) | ||
| > 충돌을 막지 말고, 애초에 안 생기게 하자 | ||
| - 핵심 : 데이터를 여러 버전을 두어 서로 간섭이 없게 하자 | ||
| - 구분 : 낙관적 락 (Optimistic Locking) | ||
| - 특징 | ||
| - Read가 Block되지 않음 | ||
| - 성능 좋음 | ||
| - 단점 | ||
| - 구현 복잡한 편 | ||
| - 완전한 Serializable 보장은 아님 |
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MVCC를 낙관적 락으로 분류했는데, 엄밀히는 MVCC와 낙관적 락은 다른 개념입니다
MVCC는 버전 관리로 읽기 충돌을 회피하는 것이고 낙관적 락은 충돌을 사후에 감지해서 롤백하는 방식이에용
동일시하면 오해 생길 수 있다는 부분
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📝 Description
동시성 제어의 필요성부터, Serializability 개념, 구현방법(Lock, MVCC)에 대해 알아본다
🚀 Key Learning
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