RPUSHX key value
相关命令
- BLPOP
- BRPOP
- BRPOPLPUSH
- LINDEX
- LINSERT
- LLEN
- LPOP
- LPUSH
- LPUSHX
- LRANGE
- LREM
- LSET
- LTRIM
- RPOP
- RPOPLPUSH
- RPUSH
- RPUSHX
Available since 2.2.0.
时间复杂度: O(1)
Inserts value
at the tail of the list stored at key
, only if key
already exists and holds a list. In contrary to RPUSH, no operation will be performed when key
does not yet exist.
返回值
Integer reply: the length of the list after the push operation.
例子
redis> RPUSH mylist "Hello"
- (integer) 1
redis> RPUSHX mylist "World"
- (integer) 2
redis> RPUSHX myotherlist "World"
- (integer) 0
redis> LRANGE mylist 0 -1
- 1) "Hello"
- 2) "World"
redis> LRANGE myotherlist 0 -1
- (empty list or set)
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