Redis LPUSHX command inserts the value at the head of the list stored at the key, only if the key already exists and holds a list.
Return Value
Integer reply, the length of the list after the push operations.
Syntax
Following is the basic syntax of Redis LPUSHX command.
redis 127.0.0.1:6379> LPUSHX KEY_NAME VALUE1.. VALUEN
Example
redis 127.0.0.1:6379> LPUSH list1 "foo" (integer) 1 redis 127.0.0.1:6379> LPUSHX list1 "bar" (integer) 2 redis 127.0.0.1:6379> LPUSHX list2 "bar" (integer) 0 redis 127.0.0.1:6379> LRANGE list1 0 -1 1) "foo" 2) "bar"
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