1.将值追加到列表
RPUSH key value [value …] summary: Append one or multiple values to a list since: 1.0.0
127.0.0.1:6379> RPUSH mylist value1 value2 value3
(integer) 3
2.获取列表的长度
LLEN key summary: Get the length of a list since: 1.0.0
127.0.0.1:6379> llen mylist
(integer) 3
3.获取并移除列表中第一个元素
BLPOP key [key …] timeout summary: Remove and get the first element in a list, or block until one is available since: 2.0.0
127.0.0.1:6379> blpop mylist 3
1) "mylist" ##列表key
2) "value1" #列表当前第一个值
127.0.0.1:6379> blpop mylist 3
1) "mylist"
2) "value2"
127.0.0.1:6379> blpop mylist 3
1) "mylist"
2) "value3"
127.0.0.1:6379> blpop mylist 3 列表已经不存在value
(nil)
(3.78s)
4.获取并移除列表中的最后一个元素
BRPOP key [key …] timeout summary: Remove and get the last element in a list, or block until one is available since: 2.0.0
127.0.0.1:6379> brpop list1 3
1) "list1" #列表键名
2) "value3" #列表最后一个值
5.出栈list中的一个value,并放入另一个list中,并返回该值
BRPOPLPUSH source destination timeout summary: Pop a value from a list, push it to another list and return it; or block until one is available since: 2.2.0
127.0.0.1:6379> BRPOPLPUSH list1 list2 3
"value2"
6.获取指定位置的value值,返回的是该位置的值,无值或超出边界返回nil
LINDEX key index summary: Get an element from a list by its index since: 1.0.0
7.在列表一个元素的之前或之后插入一个元素,返回当前列表的长度
LINSERT key BEFORE|AFTER pivot value summary: Insert an element before or after another element in a list since: 2.2.0
127.0.0.1:6379> linsert ml before v2 value2
(integer) 5 在v2之前插入值value2
8.栈顶元素出栈
LPOP key summary: Remove and get the first element in a list since: 1.0.0
127.0.0.1:6379> lpop ml
"v1"
9.向list中添加一个或多个value,后加入的值,index在前(将元素压入栈顶)
LPUSH key value [value …] summary: Prepend one or multiple values to a list since: 1.0.0
127.0.0.1:6379> lpush list2 val1 val2 val3 val4 val5
(integer) 6
127.0.0.1:6379> lindex list2 0
"val5"
10.只有当列表存在时,才从栈顶压入元素
LPUSHX key value summary: Prepend a value to a list, only if the list exists since: 2.2.0
11.获取指定范围的list的value值
LRANGE key start stop summary: Get a range of elements from a list since: 1.0.0
12.从列表中移除元素(当list中存在多个重复的值时,count确定要移除几个value)
LREM key count value summary: Remove elements from a list since: 1.0.0
13.通过元素的索引index设置value
LSET key index value summary: Set the value of an element in a list by its index since: 1.0.0
127.0.0.1:6379> lset list2 3 namew #修改第三个位置的值
OK
14 将列表修剪到指定的范围
LTRIM key start stop summary: Trim a list to the specified range since: 1.0.0
15.移除并获取列表中的最后一个元素
RPOP key summary: Remove and get the last element in a list since: 1.0.0
Redis Rpop 命令用于移除并返回列表的最后一个元素。
语法
redis Rpop 命令基本语法如下:
redis 127.0.0.1:6379> RPOP KEY_NAME
可用版本
>= 1.0.0
返回值
列表的最后一个元素。 当列表不存在时,返回 nil 。
实例
redis> RPUSH mylist "one"
(integer) 1
redis> RPUSH mylist "two"
(integer) 2
redis> RPUSH mylist "three"
(integer) 3
redis> RPOP mylist
"three"
redis> LRANGE mylist 0 -1
1) "one"
2) "two"
redis>
16.移除列表中的最后一个元素,追加到另一个列表中,并返回该值
RPOPLPUSH source destination summary: Remove the last element in a list, append it to another list and return it since: 1.2.0
17.将值追加到列表中,只有当这个列表已经存在
RPUSHX key value summary: Append a value to a list, only if the list exists since: 2.2.0