谨慎使用MySQLauto_increment_MySQL
在使用MySQL中，经常会在表中建立一个自增的ID字段，利用自增ID能够快速建立索引，也是MySQL官方比较推荐的一种方式，但是，这种方式在大量数据且配置主从时，可能会出现由于自增ID导致同步失败的情况首先需要了解一点Mysql主从同步主要通过bin log来同步，而MySQl中bin log最大值为1G， 
数据库配置主从同步2、表存在自增ID3、表数据量大，
如果在主上执行insert into…select…类SQL，该SQL事物超过1G时，MySQL会将该SQL以row模式同步从上，即同步为insert into values(.......)，而此时数据量超过1G，即超过了MySQL bin log允许的最大值，所以主从同步失败，只能删除该自增字段才能恢复主从因此在数据量很大且存在上述计算SQL的表上，谨慎使用自增字段
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