The `offset` cannot exceed 536870911.
If the `offset` is larger than the length of the specified string, the string will be padded with zeros up to the `offset`.
If the `key` does not exist, its associated string is an empty string. The resulted new string is constructed with zeros up to the given `offset` and then appended with the given `value`.
If the `key` is associated with a non-string value, an error is raised.
SETRANGE key offset value
This command overwrites the string that is associated with the given
key with the given
value, starting from the given
Returns the length of the resulted string after overwriting.
$ SETRANGE yugakey 4 "Byte"