redis的备份和还原，借助了第三方的工具，redis-dump

1、安装redis-dump

代码如下:

[root@localhost tank]# yum install ruby rubygems ruby-devel //安装rubygems 以及相关包

[root@localhost tank]# gem sources -a //源，加入淘宝，外面的源不能访问

added to sources

[root@localhost tank]# gem install redis-dump -V //安装redis-dump

2、redis-dump导出数据

代码如下:

[root@localhost tank]# telnet 127.0.0.1 6379 //telnet到redis

Trying 127.0.0.1...

Connected to 127.0.0.1.

Escape character is '^]'.

set test 11 //设置一个值

+OK

get test //取值

$2

11

[root@localhost tank]# redis-dump -u 127.0.0.1:6379 >test.json //导出数据

3、redis-load还原数据

代码如下:

[root@localhost tank]# telnet 127.0.0.1 6379 //telnet到redis

Trying 127.0.0.1...

Connected to 127.0.0.1.

Escape character is '^]'.

flushall //请空所有数据

+OK

keys * //查看已清空

*0

[root@localhost tank]# < test.json redis-load //导入数据

[root@localhost tank]# telnet 127.0.0.1 6379

Trying 127.0.0.1...

Connected to 127.0.0.1.

Escape character is '^]'.

keys * //已导入成功

*1

$4

test

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