DECRBY

Decrement the integer value of a key by a given number.

If a key does not exist, it is initialized as 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.

Arguments

key · str · required

The key to decrement.

decrement · int · required

The amount to decrement by.

Response

The value at the key after the decrementing.

Example

redis.set("key", 6)

assert redis.decrby("key", 4) == 2