redis lpush命令

LPUSH key value [value …]

Insert all the specified values at the head of the list stored at key.
If key does not exist, it is created as empty list before performing the push
operations.
When key holds a value that is not a list, an error is returned.

It is possible to push multiple elements using a single command call just
specifying multiple arguments at the end of the command.
Elements are inserted one after the other to the head of the list, from the
leftmost element to the rightmost element.
So for instance the command LPUSH mylist a b c will result into a list
containing c as first element, b as second element and a as third element.

*返回值

Integer reply: the length of the list after the push operations.

*History

  • >= 2.4: Accepts multiple value arguments.
    In Redis versions older than 2.4 it was possible to push a single value per
    command.

*例子

redis>  LPUSH mylist “world”

(integer) 1

redis>  LPUSH mylist “hello”

(integer) 2

redis>  LRANGE mylist 0 -1

1) "hello"
2) "world"
redis>