decr.3valkey - Man Page

DECR key

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.

valkey-protocol(7) Integer reply: the value of the key after decrementing it.

O(1)

@fast @string @write

• Available since: 1.0.0

127.0.0.1:6379> SET mykey "10"
OK
127.0.0.1:6379> DECR mykey
(integer) 9
127.0.0.1:6379> SET mykey "234293482390480948029348230948"
OK
127.0.0.1:6379> DECR mykey
(error) ERR value is not an integer or out of range

append(3valkey), decrby(3valkey), get(3valkey), getdel(3valkey), getex(3valkey), getrange(3valkey), incr(3valkey), incrby(3valkey), incrbyfloat(3valkey), lcs(3valkey), mget(3valkey), mset(3valkey), msetnx(3valkey), set(3valkey), setrange(3valkey), strlen(3valkey)