Configuration of innodb_memcache

Source: Internet
Author: User

Configuration of innodb_memcache

Before innodb_memcache is installed, You need to import the configuration SQL, which is located in the share directory of the installation directory, and the file name is innodb_memcached_config. SQL, which can be imported to the database.

After the import, we find that there is an additional database innodb_memcache, which has three tables:

Cache_policies: cache policy table

Config_options: configuration option table

Containers: memcache metadata container table

1. cache_policies defines three cache policies: innodb_only: Use InnoDB to store data cache-only: use the traditional Memcached engine for storage. Caching: if you cannot find it in Memcached, query InnoDB.
2. config_options defines the delimiter used for the combination of multiple fields in the configuration information separator. The default value is | the delimiter between the table_map_delimiter table and the key. The default value is. if this parameter is modified, restart mysql or reinstall the memcache plug-in.
3. containers defines the metadata information of all memcache tables and keys name: defined name db_schema: Database db_table in which the table is located: field name corresponding to key_columns: key value_columns: the field name corresponding to the value. You can use | to concatenate the flags: memcache tag cas_column: String Length Field expire_time_column: expiration time unique_idx_name_on_key: name of the unique field index in the database.
4. other server control parameters: mysql> show variables like '% memcache % '; + dimensions + ------------------ + | Variable_name | Value | + dimensions + ---------------- + | dimensions | OFF | percent | | ||| daemon_memcached_option |-p | percent | 1 | | Parameter | 1 | + parameter + ---------------- + 6 rows in set (0.00 sec) indicates whether to write the set in memcache to binlog daemon_memcached_option: Default Option of innodb_memcache, you can use "-p 11222" to specify the ports daemon_memcached_r_batch_size and daemon_memcached_w_batch_size, which are related to the write and read performance of memcache. The default value is 1, indicating reading and writing from the innodb file every! Change as appropriate
5. CREATE a TABLE in one example: use test; create table 'users' ('id' INT (10) unsigned not null AUTO_INCREMENT, 'username' VARCHAR (15) not null, 'Password' VARCHAR (32) not null, 'email 'VARCHAR (50) not null, 'flags' INT (10) unsigned default '0 ', 'cas _ column' BIGINT (20) unsigned default '0', 'expire _ time_column 'INT (10) unsigned default '0', primary key ('id '), unique key 'username' ('username') ENGINE = INNODB; write data: insert into 'users' ('username', 'Password', 'email ') VALUES ('test1', 'test1', 'test2 @ '), ('test2', 'test2', 'test2 @'); write to the memcache metadata table: insert into values (NAME, db_schema, db_table, key_columns, value_columns, flags, cas_column, expire_time_column, VALUES) VALUES ('default', 'test', 'users', 'username ', 'password | email ', 'flags', 'cas _ column', 'expire _ time_column ', 'username'); get data: [root @ www share] # echo 'get @ default. test1' | nc localhost 11222 VALUE @ default. test1 0 19 test1 | END [root @ www share] # echo 'get @ default. test2 '| nc localhost 11222 VALUE @ default. test2 0 19 test2 | END Of The

Use of innodb_memcache

Install innodb_memcache

Configuration of innodb_memcache

Architecture of MySQL Server layer and InnoDB Engine Layer

This article permanently updates the link address:

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.