list
基本資料型別,列表
在redis裡面,可以把list玩成 堆,棧
###################################3
###基本命令
127.0.0.1:6379> lpush list one ###把乙個值,放在列表的頭部(l)
(integer) 1
127.0.0.1:6379> lpush list two
(integer) 2
127.0.0.1:6379> lpush list three
(integer) 3
127.0.0.1:6379> lrange list 0 -1
1)"three"
2)"two"
3)"one"
127.0.0.1:6379> rpush list rrr ###把乙個值,放在列表的尾部(r)
(integer) 4
127.0.0.1:6379> lrange list 0 1
1)"three"
2)"two"
127.0.0.1:6379> lrange list 0 -1
1)"three"
2)"two"
3)"one"
4)"rrr"
127.0.0.1:6379>
###################################3
lpop 移除第乙個值
rpop 移除最後乙個值
127.0.0.1:6379> lpop list
"three"
127.0.0.1:6379> lrange list 0 -1
1)"two"
2)"one"
3)"rrr"
127.0.0.1:6379> rpop list
"rrr"
127.0.0.1:6379> lrange list 0 -1
1)"two"
2)"one"
127.0.0.1:6379>
#################################3
lindex 獲取某乙個值
127.0.0.1:6379> lindex list 0
"two"
127.0.0.1:6379> lindex list 1
"one"
127.0.0.1:6379>
###################################3
llen 獲取列表的長度
127.0.0.1:6379> rpush list one
(integer) 1
127.0.0.1:6379> rpush list two
(integer) 2
127.0.0.1:6379> rpush list three
(integer) 3
127.0.0.1:6379> lrange list 0 -1
1)"one"
2)"two"
3)"three"
127.0.0.1:6379> llen list
(integer) 3
127.0.0.1:6379>
###################################3
移除指定的值 (查詢刪除)
lrem key count value
127.0.0.1:6379> lrange list 0 -1
1)"one"
2)"two"
3)"three"
4)"three"
127.0.0.1:6379> lrem list 1 one
(integer) 1
127.0.0.1:6379> lrange list 0 -1
1)"two"
2)"three"
3)"three"
127.0.0.1:6379> lrem list 1 three
(integer) 1
127.0.0.1:6379> lrange list 0 -1
1)"two"
2)"three"
127.0.0.1:6379> lpush list three
(integer) 3
127.0.0.1:6379> lrange list 0 -1
1)"three"
2)"two"
3)"three"
127.0.0.1:6379> lrem list 2 three
(integer) 2
127.0.0.1:6379>
###################################
ltrim 修剪列表
127.0.0.1:6379> rpush mylist hello
(integer) 1
127.0.0.1:6379> rpush mylist hello1
(integer) 2
127.0.0.1:6379> rpush mylist hello2
(integer) 3
127.0.0.1:6379> rpush mylist hello3
(integer) 4
127.0.0.1:6379> ltrim mylist 1 2 #通過下標,擷取指定的長度,這個list已經被改變了,只剩下擷取的元素
ok127.0.0.1:6379> lrange mylist 0 -1
1)"hello1"
2)"hello2"
127.0.0.1:6379>
###################################
rpoplpush #移除最後乙個元素,並加到另乙個列表中(移動)
127.0.0.1:6379> lrange mylist 0 -1
1)"hello1"
2)"hello2"
127.0.0.1:6379> rpoplpush mylist myotherlis
"hello2"
127.0.0.1:6379> lrange mylist 0 -1
1)"hello1"
127.0.0.1:6379> lrange myotherlis 0 -1
1)"hello2"
127.0.0.1:6379>
###################################
lset 指定下標,替換值(更新)
127.0.0.1:6379> exists list
(integer) 0
127.0.0.1:6379> lset list 0 item
(error) err no such key
127.0.0.1:6379> lpush list item
(integer) 1
127.0.0.1:6379> lrange list 0 0
1)"item"
127.0.0.1:6379> lset list 0 value2
ok127.0.0.1:6379> lrange list 0 0
1)"value2"
127.0.0.1:6379>
###################################
linsert 在指定的位置插入值(插入)
127.0.0.1:6379> rpush mylist hello
(integer) 1
127.0.0.1:6379> rpush mylist hello2
(integer) 2
127.0.0.1:6379> linsert mylist before hello2 other #插前面
(integer) 3
127.0.0.1:6379> lrange 0 -1
(error) err wrong number of arguments for
'lrange'
command
127.0.0.1:6379> lrange mylist 0 -1
1)"hello"
2)"other"
3)"hello2"
127.0.0.1:6379>
127.0.0.1:6379> linsert mylist after other 222 #插後面
(integer) 4
127.0.0.1:6379> lrange mylist 0 -1
1)"hello"
2)"other"
3)"222"
4)"hello2"
127.0.0.1:6379>
小結
用途,訊息排隊,訊息佇列 lpush rpop 棧lpush lpop
redis五大型別以及相關命令
連線雲伺服器後,輸入命令redis cli進入redis.string set u 5333 將字串u設定為5333 getrange u 0 1 獲取儲存在keyu中全部字串 incr u 將u增1 decr u 將u減1 incrby u 3 將u增加3 decrby u 3 將u減去3 inc...
Redis五大型別之String操作
檢視和連線redis命令列 redis cli help 檢視所有string型別的操作 help stringstring型別分為三種 1.string 2.number 3.bit 應用場景 秒殺 incr 分布式鎖setnx 一 string 型別 1 插入資料 set k1 aa 2 如果k...
05 redis五大型別string
string型別 字串 127.0.0.1 6379 set key1 v1 設定值 ok127.0.0.1 6379 get key1 取值 v1 127.0.0.1 6379 keys 檢視所有值 1 key1 127.0.0.1 6379 exists key1 key是否存在 integer...