Quickly implement MySQL migration to Redis

A simple and fast migration of MySQL data to Redis and stored in hash, data storage needs to comply with Redis Communication protocol (official connection Http://redis.io/topics/mass-insert),

Such as:

CR LF//three fields

$ CR LF//First field ' Set ' has 3 bytes

Set CR LF//field content set

$4 CR LF//second field Key1 has 4 bytes

Key1 CR LF//Field two content MyKey

$4 CR LF//The third field has 4 bytes

Val1 CR LF//Field three content Val1

Result: Set Key1 val1

The cases are as follows:

CREATE TABLE Events_all_time (

ID INT (one) UNSIGNED not NULL auto_increment,

ACTION VARCHAR (255) is not NULL,

COUNT INT (one) is not NULL DEFAULT 0,

PRIMARY KEY (ID),

UNIQUE KEY uniq_action (action)

);

# #数据自己添加到表

REDIS Storage structure:

1.hset events_all_time ACTION COUNT # #这里设置的键值方面于数据库对应起来

2, write variables to save to the file Abc.sql

SELECT CONCAT (

"*4\r\n", # # #表示redis命令有4个字段包括命令和参数 (table field)

' $ ', LENGTH (redis_cmd), ' \ r \ n ',

Redis_cmd, ' \ r \ n ',

' $ ', LENGTH (redis_key), ' \ r \ n ',

Redis_key, ' \ r \ n ',

' $ ', LENGTH (hkey), ' \ r \ n ',

HKEY, ' \ r \ n ',

' $ ', LENGTH (hval), ' \ r \ n ',

Hval, ' \ r'# # #最后一行没有 \ n

)

From (

SELECT

' Hset ' as Redis_cmd,

'events_all_time' as Redis_key, # #这里用表名作为redis中的field名

Action as hkey,# #数据库字段

Count as Hval

From Events_all_time

) as T

3. Execution: /usr/local/mysql/bin/mysql-h192.168.1.195-udlan-p log--skip-column-names--raw <abc.sql | Redis-cli-h 192.168.1.130--pipe

Important Parameter Description:

--raw: Make MySQL do not convert the line break in field values.

--skip-column-names: Do not include column names in each line of MySQL output

This article is from the "Dbaspace" blog, make sure to keep this source http://dbaspace.blog.51cto.com/6873717/1982358

Quickly implement MySQL migration to Redis