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：
| 次 数 | MEMORY | InnoDB |
|---|---|---|
| 2000 | 0.02s user 0.04s system 28% cpu 0.184 total | 0.02s user 0.06s system 3% cpu 2.390 total |
| 100000 | 0.42s user 1.75s system 25% cpu 8.457 total | 0.98s user 2.94s system 3% cpu 2:05.15 total |
| 4000000 | 1.93s user 6.54s system 25% cpu 33.541 total | 4.38s user 11.15s system 3% cpu 8:32.89 total |
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;
| InnoDB | MEMEORY |
|---|---|
| 40.353 | 49.633 |
| 38.783 | 39.4 |
| 39.291 | 39.145 |
| 39.41 | 40.099 |
| 38.356 | 38.929 |
| 38.144 | 40.703 |
| 38.169 | 38.286 |
| 38.725 | 39.713 |
| 38.411 | 38.233 |
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