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[多选题]
下列关于doublewrite的说法正确的是()
A.假设每个页大小为16K,那么Double Write会使IO从原来的128次变成了128+1次
B.oublewrite刷入磁盘是顺序写的
C.开启doublewrite,数据库性能会提升
D.为保证数据一致性,即使是IO bound的场景也建议开启doublewrite
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ABD
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A.假设每个页大小为16K,那么Double Write会使IO从原来的128次变成了128+1次
B.oublewrite刷入磁盘是顺序写的
C.开启doublewrite,数据库性能会提升
D.为保证数据一致性,即使是IO bound的场景也建议开启doublewrite
ABD