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modify DECRBY command doc
original:
Decrements the number stored at
key
bydecrement
. If the key does not exist, it is set to0
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.
modify:
The
DECRBY
command reduces the value stored at the specifiedkey
by the specifieddecrement
. If the key does not exist, it is initialized with a value of0
before performing the operation. If the key's value is not of the correct type or cannot be represented as an integer, an error is returned. This operation is limited to 64-bit signed integers.