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docs(rpo-rto): Q4 binlog 반출 주기 60초 확정 #856
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최대 손실 약속에 반출 성공 조건을 명시하세요.
운영 설계는 FLUSH 실패 시 다음 주기로 넘깁니다(
docs/decisions/binlog-shipper-ops.mdLine 228-232). 한 주기만 실패해도 호스트 상실 시 마지막 성공 반출 이후의 손실이 약 61초를 넘을 수 있습니다. 업로드 실측 범위도 지연의 상한을 보장하지 않습니다. 약 61초를 정상 반출 조건의 목표로 명시하고, 실패 시의 손실 범위와 대응을 구분해 주세요.