由于memcached守护程序与MySQL服务器紧密集成以避免网络流量并最大程度地减少延迟，因此您可以在使用此功能的每个MySQL实例上执行此过程。
-
准备
1.1 只支持Linux, Solaris, OS X，其他平台不支持
1.2 如果使用源码编译 MySQL，需要编译时加参数-DWITH_INNODB_MEMCACHED=ON.
1.3 必须安装 libevent. -
安装 + 配置
2.1
执行脚本
mysql> source MYSQL_HOME/share/innodb_memcached_config.sql
查看
mysql> USE innodb_memcache;
mysql> SHOW TABLES;
+---------------------------+
| Tables_in_innodb_memcache |
+---------------------------+
| cache_policies |
| config_options |
| containers |
+---------------------------+
mysql> USE test;
mysql> SHOW TABLES;
+----------------+
| Tables_in_test |
+----------------+
| demo_test |
+----------------+
2.2 install plugin
mysql> INSTALL PLUGIN daemon_memcached soname "libmemcached.so";
2.3 确认是否成功setup
telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
get AA
VALUE AA 8 12
HELLO, HELLO
END
set BB 10 0 16
GOODBYE, GOODBYE
STORED
2.4 表中查看
mysql> SELECT * FROM test.demo_test;
- 创建新的表，并使用memcache plugin
3.1 创建新表
mysql> USE test;
mysql> CREATE TABLE city (
city_id VARCHAR(32),
name VARCHAR(1024),
state VARCHAR(1024),
country VARCHAR(1024),
flags INT,
cas BIGINT UNSIGNED,
expiry INT,
primary key(city_id)
) ENGINE=InnoDB;
3.2 插入信息到containers
mysql> DESCRIBE innodb_memcache.containers;
+------------------------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+--------------+------+-----+---------+-------+
| name | varchar(50) | NO | PRI | NULL | |
| db_schema | varchar(250) | NO | | NULL | |
| db_table | varchar(250) | NO | | NULL | |
| key_columns | varchar(250) | NO | | NULL | |
| value_columns | varchar(250) | YES | | NULL | |
| flags | varchar(250) | NO | | 0 | |
| cas_column | varchar(250) | YES | | NULL | |
| expire_time_column | varchar(250) | YES | | NULL | |
| unique_idx_name_on_key | varchar(250) | NO | | NULL | |
+------------------------+--------------+------+-----+---------+-------+
mysql> INSERT INTO `innodb_memcache`.`containers` (
`name`, `db_schema`, `db_table`, `key_columns`, `value_columns`,
`flags`, `cas_column`, `expire_time_column`, `unique_idx_name_on_key`)
VALUES ('default', 'test', 'city', 'city_id', 'name|state|country',
'flags','cas','expiry','PRIMARY');
3.3 重新启动daemon_memcache
mysql> UNINSTALL PLUGIN daemon_memcached;
mysql> INSTALL PLUGIN daemon_memcached soname "libmemcached.so";
3.4 通过memcache测试
telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
set B 0 0 22
BANGALORE|BANGALORE|IN
STORED
3.5 通过mysql查看表内容
mysql> SELECT * FROM test.city;
+---------+-----------+-----------+---------+-------+------+--------+
| city_id | name | state | country | flags | cas | expiry |
+---------+-----------+-----------+---------+-------+------+--------+
| B | BANGALORE | BANGALORE | IN | 0 | 3 | 0 |
+---------+-----------+-----------+---------+-------+------+--------+
3.6 通过SQL向表中插入新的数据
mysql> INSERT INTO city VALUES ('C','CHENNAI','TAMIL NADU','IN', 0, 0 ,0);
mysql> INSERT INTO city VALUES ('D','DELHI','DELHI','IN', 0, 0, 0);
mysql> INSERT INTO city VALUES ('H','HYDERABAD','TELANGANA','IN', 0, 0, 0);
mysql> INSERT INTO city VALUES ('M','MUMBAI','MAHARASHTRA','IN', 0, 0, 0);
3.7 通过memcache查看插入的新数据
get H
VALUE H 0 22
HYDERABAD|TELANGANA|IN
END
