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수정"}},{"before":"7d5b194c7d2321db2426b31822b890d10b58c423","after":null,"ref":"refs/heads/fix/#172","pushedAt":"2023-08-25T16:47:16.000Z","pushType":"branch_deletion","commitsCount":0,"pusher":{"login":"Seongjun-Kwon","name":"Seongjun Kwon","path":"/Seongjun-Kwon","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/82152173?s=80&v=4"}},{"before":"d62f30c763282020eb686fd16b41fdbf048a0096","after":"01bcd93b59edfeb800efd4b811be5e34762fdb14","ref":"refs/heads/develop","pushedAt":"2023-08-25T16:47:15.000Z","pushType":"pr_merge","commitsCount":1,"pusher":{"login":"Seongjun-Kwon","name":"Seongjun Kwon","path":"/Seongjun-Kwon","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/82152173?s=80&v=4"},"commit":{"message":"Fix: 후기 테이블의 투표 수 컬럼 추가로 인한 동시성 제어 로직 추가 (#174)\n\n- 락을 걸지 여부\r\n    - 투표 수가 실시간으로 정합성이 맞아야하는 것은 아님. 일정 주기로 투표 테이블에 있는 수를 count 해서 후기의 투표 수 컬럼에 반영해줘도 됨. 다만 후기의 수가 많아질수록 부담이 커지므로 락을 거는 방식으로 해결하기로 함.\r\n\r\n- 어떤 식으로 락을 걸 것인가?\r\n    - synchronized, 비관적락, 낙관적락, 분산락 정도가 있음.\r\n        - 비관적락\r\n            - 투표 테이블에 쓰기 락이 걸림. 투표 생성 중에는 다른 트랜잭션에서 투표 테이블의 조회도 불가능하게 됨. 투표는 생성보다도 조회가 잦음. 성능적으로 이슈 있음.\r\n        - 낙관적락\r\n            - 투표 생성은 충돌이 자주 일어나지 않을 것이라 판단됨. 대규모 커뮤니티 실시간 인기글을 보아도 투표 수가 많아야 300개 정도임. 프론트 단에서 투표 생성 시 모달 창 단계를 추가한다면 더더욱 충돌이 줄어들 것임.\r\n        - 결론\r\n            - 현재 서버는 싱글 서버, 싱글 DB 라서 낙관적락으로도 충분함. 다만, 분산 서버, 분산 DB 환경임을 가정한다면 버전을 동기화해주는 추가적인 리소스가 필요함. synchronized 도 같은 이유로 배제하고 Redis 를 활용한 분산락을 선택함.","shortMessageHtmlLink":"Fix: 후기 테이블의 투표 수 컬럼 추가로 인한 동시성 제어 로직 추가 (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"1867366796\" data-permission-text=\"Title is private\" data-url=\"https://github.com/Seongjun-Kwon/seat-view-reviews/issues/174\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/Seongjun-Kwon/seat-view-reviews/pull/174/hovercard\" href=\"https://github.com/Seongjun-Kwon/seat-view-reviews/pull/174\">#174</a>)"}},{"before":null,"after":"7d5b194c7d2321db2426b31822b890d10b58c423","ref":"refs/heads/fix/#172","pushedAt":"2023-08-24T15:40:52.000Z","pushType":"branch_creation","commitsCount":0,"pusher":{"login":"Seongjun-Kwon","name":"Seongjun Kwon","path":"/Seongjun-Kwon","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/82152173?s=80&v=4"},"commit":{"message":"Test: 동시성 로직 추가에 따른 테스트 코드 작성 및 문서화","shortMessageHtmlLink":"Test: 동시성 로직 추가에 따른 테스트 코드 작성 및 문서화"}}],"hasNextPage":true,"hasPreviousPage":false,"activityType":"all","actor":null,"timePeriod":"all","sort":"DESC","perPage":30,"startCursor":"Y3Vyc29yOnYyOpK7MjAyMy0xMC0yOVQwNzowODowMi4wMDAwMDBazwAAAAOiRMUT","endCursor":"Y3Vyc29yOnYyOpK7MjAyMy0wOC0yNFQxNTo0MDo1Mi4wMDAwMDBazwAAAANxz2hC"}},"title":"Activity · Seongjun-Kwon/seat-view-reviews"}