Taobao's entire database team is gradually migrating some databases from Oracle to MySQL, and then, transferring some servers from minicomputers to PC server. MySQL is actually open source software based on the GPL protocol, so some risks have been considered in the early stage of Taobao's use.

MySQL versions are relatively confusing, including the official versions of 5. and 5.1 that we are using now, and recently there are two versions including development, one is 6., and the other is 5.4. These features will be intertwined with each other, so we don't know which version will be better when choosing.

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Taobao is a large online retail and business circle in the Asia-Pacific region, which was founded by Alibaba Group in May 23.

By the end of 211, the daily turnover of Taobao reached 4.38 billion yuan, creating 2.78 million direct and full employment opportunities. With the expansion of Taobao's scale and the increase of users, Taobao has also changed from a single C2C online marketplace to a comprehensive retail business circle including C2C, group purchase, distribution, auction and other e-commerce modes. At present, it has become one of the e-commerce trading platforms in the world.