Redisの基本のキ（インストールから基本的コマンドについて）

Redisとは

• インメモリのリモートデータベース。
• 非リレーショナルデータベース
• 5種類のデータ構造

Redisのインストール・起動

[vagrant@vagrant-centos64 ~]$ sudo yum --enablerepo=epel install redis
vagrant@vagrant-centos64 ~]$ sudo /etc/init
init/    init.d/  inittab  
[vagrant@vagrant-centos64 ~]$ sudo /etc/init.d/redis start
Starting redis-server:                                     [  OK  ]
[vagrant@vagrant-centos64 ~]$ redis-cli

初期起動

[vagrant@vagrant-centos64 ~]$ redis-cli
redis 127.0.0.1:6379> set hello world
OK
redis 127.0.0.1:6379> get hello
"world"
redis 127.0.0.1:6379> del hello
(integer) 1
redis 127.0.0.1:6379> get hello
(nil)

List

redis 127.0.0.1:6379> rpush list-key item
(integer) 1
redis 127.0.0.1:6379> rpush list-key item2
(integer) 2
redis 127.0.0.1:6379> rpush list-key item
(integer) 3
redis 127.0.0.1:6379> lrange list-key 0 -1
1) "item"
2) "item2"
3) "item"
redis 127.0.0.1:6379> lindex list-key 1
"item2"
redis 127.0.0.1:6379> lpop list-key
"item"
redis 127.0.0.1:6379> lrange list-key 0 -1
1) "item2"
2) "item"

SET

redis 127.0.0.1:6379> sadd set-key item
(integer) 1
redis 127.0.0.1:6379> sadd set-key item2
(integer) 1
redis 127.0.0.1:6379> sadd set-key item23
(integer) 1
redis 127.0.0.1:6379> sadd set-key item
(integer) 0
redis 127.0.0.1:6379> smembers set-key
1) "item"
2) "item23"
3) "item2"
redis 127.0.0.1:6379> sismember set-key item4
(integer) 0
redis 127.0.0.1:6379> sismember set-key item
(integer) 1
redis 127.0.0.1:6379> srem set-key item2
(integer) 1
redis 127.0.0.1:6379> srem set-key item2
(integer) 0
redis 127.0.0.1:6379> smembers set-key
1) "item"
2) "item23"

Hash

redis 127.0.0.1:6379> hset hash-key sub-key1 value1
(integer) 1
redis 127.0.0.1:6379> hset hash-key sub-key2 value2
(integer) 1
redis 127.0.0.1:6379> hset hash-key sub-key2 value2
(integer) 0
redis 127.0.0.1:6379> hgetall hash-key
1) "sub-key1"
2) "value1"
3) "sub-key2"
4) "value2"
redis 127.0.0.1:6379> hdel hash-key sub-key2
(integer) 1
redis 127.0.0.1:6379> hdel hash-key sub-key2
(integer) 0
redis 127.0.0.1:6379> hget hash-key sub-key1
"value1"
redis 127.0.0.1:6379> hgetall hash-key
1) "sub-key1"
2) "value1"

ZSET

redis 127.0.0.1:6379> zadd zset-key 728 member1
(integer) 1
redis 127.0.0.1:6379> zadd zset-key 982 member0
(integer) 1
redis 127.0.0.1:6379> zadd zset-key 982 member0
(integer) 0
redis 127.0.0.1:6379> zrange zset-key 0 -1 withscores
1) "member1"
2) "728"
3) "member0"
4) "982"
redis 127.0.0.1:6379> zrangebyscore zset-key 0 800 withscores
1) "member1"
2) "728"
redis 127.0.0.1:6379> zrem zset-key member1
(integer) 1
redis 127.0.0.1:6379> zrem zset-key member1
(integer) 0
redis 127.0.0.1:6379> zrange zset-key 0 -1 withscores
1) "member0"
2) "982"

参考

Redis入門 インメモリKVSによる高速データ管理

更新履歴

2016/06/05 初版