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這篇文章主要介紹 redis 數據備份和遷移工具 redis-dump 如何安裝使用，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！
一. 安裝:
# git clone https://github.com/delano/redis-dump.git
Initialized empty Git repository in /root/shell/20180928/redis-dump/.git/
remote: Enumerating objects: 691, done.
remote: Total 691 (delta 0), reused 0 (delta 0), pack-reused 691
Receiving objects: 100% (691/691), 2.09 MiB | 53 KiB/s, done.
Resolving deltas: 100% (293/293), done.
#gem install redis
Fetching: redis-4.0.2.gem (100%)
Successfully installed redis-4.0.2
Parsing documentation for redis-4.0.2
Installing ri documentation for redis-4.0.2
Done installing documentation for redis after 3 seconds
1 gem installed
#gem install uri-redis
Fetching: uri-redis-0.4.2.gem (100%)
Successfully installed uri-redis-0.4.2
Parsing documentation for uri-redis-0.4.2
Installing ri documentation for uri-redis-0.4.2
Done installing documentation for uri-redis after 0 seconds
1 gem installed
#gem install yajl-ruby
Fetching: yajl-ruby-1.4.1.gem (100%)
Building native extensions. This could take a while…
Successfully installed yajl-ruby-1.4.1
Parsing documentation for yajl-ruby-1.4.1
Installing ri documentation for yajl-ruby-1.4.1
Done installing documentation for yajl-ruby after 1 seconds
1 gem installed
#gem install drydock
Fetching: drydock-0.6.9.gem (100%)
Successfully installed drydock-0.6.9
Parsing documentation for drydock-0.6.9
Installing ri documentation for drydock-0.6.9
Done installing documentation for drydock after 1 seconds
1 gem installed
#ruby -rubygems bin/redis-dump
{db :0, key : 192.168.184.122:6379:CommandCount:1528291051 , ttl :-1, type : zset , value :[[ LLEN ,1.0],[DEL ,3.0],[BRPOP ,7.0],[RPOP ,234.0],[SELECT ,236.0],[HGET ,360.0],[LPUSH ,437.0],[GET ,460.0]], size :68}
{db :0, key : 192.168.184.226:6379:KeyCount:1528190344 , ttl :-1, type : zset , value :[[ 1 ,1.0],[None ,2.0],[zhsq_kb_comment_data ,9.0],[zhsq_ecom_comment_buffer ,36.0],[zhsq_topic_filter_buffer ,120.0],[zhsq_filter_buffer ,132.0],[zhsq_topic_data ,183.0],[zhsq_mon_buffer ,191.0],[zhsq_data ,214.0],[zhsq_jfilter_data ,225.0]], size :190}
{db :0, key : 192.168.184.122:6379:CommandCountByMinute , ttl :-1, type : hash , value :{ 180605:9:23 : 22393 , 180606:13:16 : 945 , 180606:13:17 : 3568 , 180606:13:20 : 11768}, size :64}
{db :0, key : 192.168.184.220:6379:CommandCountByMinute , ttl :-1, type : hash , value :{ 180605:9:23 : 22998 , 180606:13:16 : 993 , 180606:13:17 : 3818 , 180606:13:20 : 12101}, size :64}
{db :0, key : 192.168.184.213:6379:KeyCount:1528291078 , ttl :-1, type : zset , value :[[ * ,1845.0]], size :7}
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{db :1, key : hello , ttl :-1, type : string , value : world , size :5}
{db :5, key : dsf , ttl :-1, type : string , value : chenfeng , size :8}
{db :5, key : hello , ttl :-1, type : string , value : world , size :5}
{db :6, key : love , ttl :-1, type : string , value : peihy , size :5}
{db :6, key : dsf , ttl :-1, type : string , value : chenfeng , size :8}
{db :6, key : hello , ttl :-1, type : string , value : world , size :5}
{db :7, key : love , ttl :-1, type : string , value : peihy , size :5}
{db :7, key : chenfeng , ttl :-1, type : string , value : dsf , size :3}
二. 使用:
全庫備份例子:
#cd redis-dump/bin
#./redis-dump -u 127.0.0.1 /root/shell/20180928/db_all.json
只備份 redis 某個庫的例子:
首先往 10 號庫里寫點數據:
#redis-cli
127.0.0.1:6379[1] select 10
OK
127.0.0.1:6379[10] set China World
OK
127.0.0.1:6379[10] set love chenfeng
OK
127.0.0.1:6379[10] set fuck America
OK
只備份 10 號庫:
#./redis-dump -u 127.0.0.1 -d 10 /root/shell/20180928/db_10.json
查看內容：
[root@alpha-mongo-140-52 ~/shell/20180928/redis-dump/bin]#cat /root/shell/20180928/db_10.json
{db :10, key : fuck , ttl :-1, type : string , value : America , size :7}
{db :10, key : love , ttl :-1, type : string , value : chenfeng , size :8}
{db :10, key : China , ttl :-1, type : string , value : World , size :5}
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