MySQL Mysql如何做增量备份
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How to do a incremental backup in Mysql
提问by Cybrix
Possible Duplicate:
What is the best way to do Incremental backups in Mysql?
可能的重复：
在 Mysql 中进行增量备份的最佳方法是什么？
Is there a way to do differentialincremental backup in MySQL ? I dont know if there is a PHP script or shell script able to do this.
有没有办法在 MySQL 中进行差异增量备份？我不知道是否有 PHP 脚本或 shell 脚本能够做到这一点。
I believe each tables states must be saved and their differences must be exported in the backup. Any way to accomplish this?
我相信必须保存每个表的状态，并且必须在备份中导出它们的差异。有什么办法可以做到这一点吗？
I know there are other types of backup but I like the way smallers backup are generated at time in differentialincremental backups.
我知道还有其他类型的备份，但我喜欢在差异增量备份中同时生成较小备份的方式。
Edit:
编辑：
I forgot to specify that my DB engine is InnoDB
我忘了指定我的数据库引擎是 InnoDB
采纳答案by ajreal
Yes, is called incremental backupinstead of differential backup
(correct me if I making wrong assumption)
是的，称为增量备份而不是差异备份
（如果我做出错误假设，请纠正我）
use binary log (replication sql log)
使用二进制日志（复制sql日志）
- http://dev.mysql.com/doc/refman/5.1/en/backup-methods.html
- http://dev.mysql.com/doc/refman/5.1/en/point-in-time-recovery.html
- http://dev.mysql.com/doc/refman/5.1/en/backup-methods.html
- http://dev.mysql.com/doc/refman/5.1/en/point-in-time-recovery.html
in nutshell, binary log contains list of write sql (insert,delete,update,alter table...) and execute these statement sequentially will provide a incremental update (which is what replication does)
简而言之，二进制日志包含写入 sql 的列表（插入、删除、更新、更改表...）并按顺序执行这些语句将提供增量更新（这就是复制所做的）
