binlog作用

The binary log contains all statements that update data or potentially could have updated it (for example, aDELETE which matched no rows). 

binary log 包含里所有语句 包括更新数据或者潜在的已经更新的 (比如 delete
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Statements are stored in the form of "events"  that describe the modifications.

语句被存放在events的形式 来描述修改

 The binary log also contains information about how long each statement took that updated data.

 The binary log 也包含了 每个语句消耗用于更新数据的时间

原文地址:https://www.cnblogs.com/hzcya1995/p/13351635.html