DECR

DECR

DECR key

Available since:

1.0.0

Time complexity:

O(1)

ACL categories:

@write, @string, @fast,

Decrements the number stored at key by one. If the key does not exist, it is set to 0 before performing the operation. An error is returned if the key contains a value of the wrong type or contains a string that can not be represented as integer. This operation is limited to 64 bit signed integers.

See INCR for extra information on increment/decrement operations.

Return

Integer reply: the value of key after the decrement

Examples

SET mykey "10"
DECR mykey
SET mykey "234293482390480948029348230948"
DECR mykey