flyway

./gradlew test.png

MEMORY 、InnoDB 对比

• vim TestDB.sql

  1 CREATE TABLE `memory` (
  2   `id` int(11) NOT NULL AUTO_INCREMENT,
  3   `code` int(11) NOT NULL,
  4   PRIMARY KEY (`id`)
  5 ) ENGINE=MEMORY AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;
  6 
  7 
  8 CREATE TABLE `innodb` (
  9   `id` int(11) NOT NULL AUTO_INCREMENT,
 10   `code` int(11) NOT NULL,
 11   PRIMARY KEY (`id`)
 12 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;

• vim memory.sql

 insert into memory values(null,1);

• vim innodb.sql

 insert into innodb values(null,2);

注：
复制 ： Esc + yy + 复制次数 + p
删除一行 ： Esc + dd
删除多行 ： Esc + 删除行数 + dd
删除从某一行至最后一行： 选中起始行 + v + Shift G + dd

• 导入 *.sql

$ mysql -u root -pthoughtworks -h 127.0.0.1 TestDB < TestDB.sql

// 显示表属性
mysql> show table status from TestDB ;
+--------+--------+---------+------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| Name   | Engine | Version | Row_format | Rows  | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time         | Check_time | Collation       | Checksum | Create_options | Comment |
+--------+--------+---------+------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| innodb | InnoDB |      10 | Dynamic    | 47405 |             33 |     1589248 |               0 |            0 |   4194304 |          46885 | 2017-03-05 03:01:15 | 2017-03-05 04:21:45 | NULL       | utf8_general_ci |     NULL |                |         |
| memory | MEMORY |      10 | Fixed      |     0 |              9 |           0 |         3774870 |            0 |         0 |              1 | 2017-03-05 04:20:41 | NULL                | NULL       | utf8_general_ci |     NULL |                |         |
+--------+--------+---------+------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
2 rows in set (0.00 sec)

• 计算 insert 执行时间

$  time mysql -u root -ppassword -h 127.0.0.1 TestDB < memory.sql
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql -u root -ppassword -h 127.0.0.1 TestDB < memory.sql  1.93s user 6.54s system 25% cpu 33.541 total

$time mysql -u root -ppassword -h 127.0.0.1 TestDB < innodb.sql 
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql -u root -ppassword -h 127.0.0.1 TestDB < innodb.sql  4.38s user 11.15s system 3% cpu 8:32.89 total

• insert 对比：

mysqldump 使用

• 导出 docker 中 mysql 数据库 BronzeSword 的信息 到 bs.sql 文件中：

docker exec -i assembly_mysql_1 mysqldump -u root -ppassword BronzeSword > bs.sql

• mysqldump 命令参数

--no-create-info，-t ：只导出数据，而不添加 CREATE TABLE 语句。

docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -t BronzeSword > data.sql

--no-data，-d：不导出任何数据，只导出数据库表结构。

docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -d BronzeSword > BronzeSword.sql

Java 程序中更新已有数据库的存储引擎

思路 ： (InnoDB -> MEMORY)

• 导出表结构 ： docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -t BronzeSword > data.sql
• 导出数据：docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -t BronzeSword > data.sql
• 更新表类型：sed -i \"s/InnoDB/MEMORY/g\" BronzeSword.sql
• 导入表：docker exec -i assembly_mysql_1 mysql -u root -ppassword BronzeSword < ./BronzeSword.sql
• 导入数据：docker exec -i assembly_mysql_1 mysql -u root -ppassword BronzeSword < ./data.sql

Java 代码如下：

• 导入导出：

try {
-            Process exec = Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c",
-                    "docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -t BronzeSword > ./data.sql"
-                            + "docker exec -i assembly_mysql_1 mysqldump -u root -ppassword -d BronzeSword > ./BronzeSword.sql;"
-                            + "sed -i \"s/InnoDB/MEMORY/g\" BronzeSword.sql;"
-                            + "docker exec -i assembly_mysql_1 mysql -u root -ppassword BronzeSword < ./BronzeSword.sql;"
                             + "docker exec -i assembly_mysql_1 mysql -u root -ppassword BronzeSword < ./data.sql;"});
-            exec.waitFor();
-        } catch (IOException e) {
-            e.printStackTrace();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }

注：导出的 .sql 文件 在当前项目的根目录下

• 每次执行测试时导入数据：

@Before
    public void setUp() throws Exception {
        Process exec = Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c",
                "docker exec -i assembly_mysql_1 mysql -u root -ppassword  BronzeSword < ./data.sql;"});
        exec.waitFor();
        session.startManagedSession();
    }

• 执行测试时 MEMORY 与 InnoDB 速度对比：
  MEMORY ： 执行 sed -i \"s/InnoDB/MEMORY/g\" BronzeSword.sql;
  InnoDB ： 不执行 sed -i \"s/InnoDB/MEMORY/g\" BronzeSword.sql;

 ./gradlew flywayclean flywaymigrate test;

http://blog.csdn.net/aasmfox/article/details/40747145
http://www.linuxidc.com/Linux/2012-10/72884.htm
http://www.cnblogs.com/mywolrd/archive/2009/11/12/1930688.html