http://baike.baidu.com/link?url=LsT9uKY9cI4O9tBtLUnuC1LsCDcay6z2gtY9zA9nUP5qDGujg-RayCHKoeBRoybD4T02He4JwoOnbjba9uJPhDYE-3G0kI8BQFd8hvMAxga
CAP原理和BASE思想