使用memcached将mysql用作nosql-表不更新

我是mysql中使用nosql的新手

我已安装并启用memcahed接口，然后遵循以下STPE：

-已创建新表“用户”

mysql> CREATE TABLE test.users (
  `user_id` varchar(32) NOT NULL DEFAULT '',
  `first` varchar(100) DEFAULT NULL,
  `last` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB

-将其添加到contaoners表中

mysql> INSERT INTO containers 
(name, db_schema, db_table, key_columns,
value_columns, unique_idx_name_on_key)
VALUES ('default', 'test', 'users', 'user_id', 'first|last', 'PRIMARY');

mysql> select * from innodb_memcache.containers;
+---------+-----------+-----------+-------------+---------------+-------+------------+--------------------+------------------------+
| name    | db_schema | db_table  | key_columns | value_columns | flags | cas_column | expire_time_column | unique_idx_name_on_key |
+---------+-----------+-----------+-------------+---------------+-------+------------+--------------------+------------------------+
| aaa     | test      | demo_test | c1          | c2            | c3    | c4         | c5                 | PRIMARY                |
| default | test      | users     | user_id     | first|last    | 0     | NULL       | NULL               | PRIMARY                |
+---------+-----------+-----------+-------------+---------------+-------+------------+--------------------+------------------------+
2 rows in set (0.00 sec)

-使用telnet启动接口，并运行以下命令将值存储到表中

set foo 0 0 14
Jarvis|Badgley

-现在getfoo给出存储的结果

get foo
VALUE foo 0 14
Jarvis|Badgley
END

-但是当我检查mysql表时，这些值并没有被存储

mysql> select * from test.users;
Empty set (0.00 sec)

我不明白为什么更新后的值没有反映在表中

---

请帮忙

按照您的步骤，我已经能够让它工作了，但有一些修复

首先，用户表定义错误（列'id'不存在）。应该是：

CREATE TABLE test.users (
  `user_id` varchar(32) NOT NULL DEFAULT '',
  `first` varchar(100) DEFAULT NULL,
  `last` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`user_id`)
) ENGINE=InnoDB

如果配置此表：

INSERT INTO containers 
(name, db_schema, db_table, key_columns,
value_columns, unique_idx_name_on_key)
VALUES ('default', 'test', 'users', 'user_id', 'first|last', 'PRIMARY');

使用

INSTALL插件守护进程_memcached soname“libmemcached.so”启动引擎，您将在mysql.log文件中找到此错误：

InnoDB_Memcached: column 6 in the entry for config table 'containers' in database 'innodb_memcache' has an invalid NULL value
Failed to initialize instance. Error code: 13

因此，您应该为
标志
、
cas
和
到期
定义列，方法如下：

CREATE TABLE test.users (
  `user_id` varchar(32) NOT NULL DEFAULT '',
  `first` varchar(100) DEFAULT NULL,
  `last` varchar(100) DEFAULT NULL,
  flags int,
  cas bigint unsigned,
  expiry int,
  PRIMARY KEY (`user_id`)
) ENGINE=InnoDB;

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', 'users', 'user_id', 'first|last', 'flags', 'cas', 'expiry', 'PRIMARY');

然后，当您重新启用插件时，它将开始工作

telnet localhost 11222
Trying ::1...
Connected to localhost.
Escape character is '^]'.
set key 0 3600 8
John|Doe
STORED

以及查询数据库：

mysql> select * from test.users;
+---------+-------+------+-------+------+------------+
| user_id | first | last | flags | cas  | expiry     |
+---------+-------+------+-------+------+------------+
| key     | John  | Doe  |     0 |   50 | 1495534750 |
+---------+-------+------+-------+------+------------+
1 row in set (0.00 sec)

如何将mysql连接到memcached或memcached？我已经安装了mysql插件守护程序\u memcached
INSTALL plugin守护程序\u memcached SONAME'libmemcached.so'