GETSET is an atomic set this value and return the old value command. Set key to the string
value and return the old value stored at key. The string can't be longer than 1073741824 bytes
(1 GB).
<p>
Time complexity: O(1)
@param key
@param value
@return Bulk reply
GETSET is an atomic set this value and return the old value command. Set key to the string value and return the old value stored at key. The string can't be longer than 1073741824 bytes (1 GB). <p> Time complexity: O(1) @param key @param value @return Bulk reply