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📜  Redis-列表

📅  最后修改于: 2020-11-26 07:03:04             🧑  作者: Mango

Redis列表只是字符串列表，按插入顺序排序。您可以在Redis列表的顶部或底部添加元素。

列表的最大长度为2个32 – 1元件(4294967295，超过4十亿每列表中的元素)。

例

redis 127.0.0.1:6379> LPUSH tutorials redis 
(integer) 1 
redis 127.0.0.1:6379> LPUSH tutorials mongodb 
(integer) 2 
redis 127.0.0.1:6379> LPUSH tutorials mysql 
(integer) 3 
redis 127.0.0.1:6379> LRANGE tutorials 0 10  
1) "mysql" 
2) "mongodb" 
3) "redis"

在上面的示例中，通过命令LPUSH将三个值插入到名为“ tutorials”的Redis列表中。

Redis列出命令

下表列出了一些与列表相关的基本命令。

Sr.No Command & Description
1 BLPOP key1 [key2 ] timeout

Removes and gets the first element in a list, or blocks until one is available
2 BRPOP key1 [key2 ] timeout

Removes and gets the last element in a list, or blocks until one is available
3 BRPOPLPUSH source destination timeout

Pops a value from a list, pushes it to another list and returns it; or blocks until one is available
4 LINDEX key index

Gets an element from a list by its index
5 LINSERT key BEFORE|AFTER pivot value

Inserts an element before or after another element in a list
6 LLEN key

Gets the length of a list
7 LPOP key

Removes and gets the first element in a list
8 LPUSH key value1 [value2]

Prepends one or multiple values to a list
9 LPUSHX key value

Prepends a value to a list, only if the list exists
10 LRANGE key start stop

Gets a range of elements from a list
11 LREM key count value

Removes elements from a list
12 LSET key index value

Sets the value of an element in a list by its index
13 LTRIM key start stop

Trims a list to the specified range
14 RPOP key

Removes and gets the last element in a list
15 RPOPLPUSH source destination

Removes the last element in a list, appends it to another list and returns it
16 RPUSH key value1 [value2]

Appends one or multiple values to a list
17 RPUSHX key value

Appends a value to a list, only if the list exists