redis的數據類型有:string,list,set,hash,zset五種類型。
1.string
操作命令:set 設置string的值
get 獲取string的值
del 刪除string的值
實例:
127.0.0.1:6379> set hello world
OK
127.0.0.1:6379> get hello
"world"
127.0.0.1:6379> del hello
(integer) 1
127.0.0.1:6379> get hello
(nil)
2,list
操作命令: lpush 在list的左邊添加元素
rpush 在list的右邊添加元素
lpop 從list 的左邊彈出(刪除)元素
rpop 從list 的右邊彈出(刪除)元素
lrange 獲取list某個範圍的元素
lindex 獲取單個元素
實例:
127.0.0.1:6379> rpush list-key item2
(integer) 2
127.0.0.1:6379> rpush list-key item
(integer) 3
127.0.0.1:6379> lrange list-key 0-1
(error) ERR wrong number of arguments for 'lrange' command
127.0.0.1:6379> lrange list-key 0 -1
1) "item"
2) "item2"
3) "item"
127.0.0.1:6379> lindex list-key 1
"item2"
127.0.0.1:6379> lindex list-key 0
"item"
127.0.0.1:6379> lpush list-key item1
(integer) 4
127.0.0.1:6379> lrange list-key 0 -1
1) "item1"
2) "item"
3) "item2"
4) "item"
127.0.0.1:6379> lpop list-key 0
(error) ERR wrong number of arguments for 'lpop' command
127.0.0.1:6379> lpop list-key
"item1"
127.0.0.1:6379> lrange list-key
(error) ERR wrong number of arguments for 'lrange' command
127.0.0.1:6379> lrange list-key 0 2
1) "item"
2) "item2"
3) "item"
set集合:
操作命令:sadd 向set添加元素
smemebers 獲取集合的素有元素
sismemeber 判斷一個元素是否存在
srem 刪除一個元素
實例:
127.0.0.1:6379> sadd set-key item
(integer) 1
127.0.0.1:6379> sadd set-key item2
(integer) 1
127.0.0.1:6379> sadd set-key item
(integer) 0
127.0.0.1:6379> sadd set-key item3
(integer) 1
127.0.0.1:6379> smembers set-key
1) "item3"
2) "item2"
3) "item"
127.0.0.1:6379> smembers set-key
1) "item3"
2) "item2"
3) "item"
127.0.0.1:6379> smembers set-key
1) "item3"
2) "item2"
3) "item"
127.0.0.1:6379> smembers set-key
1) "item3"
2) "item2"
3) "item"
127.0.0.1:6379> sismember set-key item4
(integer) 0
127.0.0.1:6379> sismember set-key item3
(integer) 1
127.0.0.1:6379> srem set-key item3
(integer) 1
127.0.0.1:6379> srem set-key item3
(integer) 0
127.0.0.1:6379> smembers set-key
1) "item2"
2) "item"
127.0.0.1:6379>
hash散列:
操作命令:hset 添加散列元素
hget 獲取散列元素
hgetall 獲取所有的散列元素
hdel 刪除散列元素
實例:
127.0.0.1:6379> hset hash-key sub-key1 value1
(integer) 1
127.0.0.1:6379> hset hash-key sub-key2 value2
(integer) 1
127.0.0.1:6379> hset hash-key sub-key1 value1
(integer) 0
127.0.0.1:6379> hgetall hash-key
1) "sub-key1"
2) "value1"
3) "sub-key2"
4) "value2"
127.0.0.1:6379> hdel hash-key sub-key2
(integer) 1
127.0.0.1:6379> hdel hash-key sub-key2
(integer) 0
127.0.0.1:6379> hget hash-key sub-key1
"value1"
127.0.0.1:6379> hgetall hash-key
1) "sub-key1"
2) "value1"
127.0.0.1:6379>
zset有序集合:
操作命令:zadd 添加有序集合元素
zrange 獲取多個元素並返回排序中的位置
zrangebyscore 獲取給定範圍的元素
zrem 刪除元素
實例:
127.0.0.1:6379> zadd zset-key 728 member1
(integer) 1
127.0.0.1:6379> zadd zset-key 982 member0
(integer) 1
127.0.0.1:6379> zadd zset-key 982 member0
(integer) 0
127.0.0.1:6379> zrange zset-key 0 -1 withscores
1) "member1"
2) "728"
3) "member0"
4) "982"
127.0.0.1:6379> zrangebyscore zset-key 0 800 withscores
1) "member1"
2) "728"
127.0.0.1:6379> zrange zset-key 0 -1
1) "member1"
2) "member0"
127.0.0.1:6379> zrem zset-key member1
(integer) 1
127.0.0.1:6379> zrem zset-key member1
(integer) 0
127.0.0.1:6379> zrange zset-key 0 -1
1) "member0"
127.0.0.1:6379> zrange zset-key 0 -1 withscores
1) "member0"
2) "982"
127.0.0.1:6379>