MySQL 常见的存储引擎,可以使用
SHOW ENGINES
命令,来列出所有的存储引擎
Engine | Support | Comment | Transactions | XA | Savepoints |
---|---|---|---|---|---|
FEDERATED | NO | Federated MySQL storage engine | |||
MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
MyISAM | YES | MyISAM storage engine | NO | NO | NO |
BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
CSV | YES | CSV storage engine | NO | NO | NO |
MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
ARCHIVE | YES | Archive storage engine | NO | NO | NO |
InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
InnoDB 是 MySQL 默认支持的存储引擎,支持事务、行级锁定和外键。
在 5.1 版本之前,MyISAM 是 MySQL 的默认存储引擎,MyISAM 并发性比较差,使用的场景比较少,主要特点是
自从 MySQL 5.1 之后,默认的存储引擎变成了 InnoDB 存储引擎,相对于 MyISAM,InnoDB 存储引擎有了较大的改变,它的主要特点是