Set a key on the memcached server, overwriting the value if it exists.

def set_(conn,
         key,
         value,
         time=DEFAULT_TIME,
         min_compress_len=DEFAULT_MIN_COMPRESS_LEN):
    '''
    Set a key on the memcached server, overwriting the value if it exists.
    '''
    if not isinstance(time, integer_types):
        raise SaltInvocationError('\'time\' must be an integer')
    if not isinstance(min_compress_len, integer_types):
        raise SaltInvocationError('\'min_compress_len\' must be an integer')
    _check_stats(conn)
    return conn.set(key, value, time, min_compress_len)