redis的备份和还原，借助了第三方的工具，redis-dump

1、安装redis-dump

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

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

http://ruby.taobao.org/ added to sources  

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

2、redis-dump导出数据

[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

[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