分布式数据库中全局唯一主键生成策略的设计与实现

With the development of Internet and the explosive growth of the data, centralized database has been unable to meet the requirements of massive data storage and query quickly, and then distributed database came into being. Distributed database is a logically unified database consist of multiple databases dispersed units in physicals. In distributed database, the global unique primary key guarantees the uniqueness of the data on the logic. This paper proposed a new generation strategy of global unique primary key. Build generation server cluster and use MYSQL settings properties and consistent hash to achieve availability, disaster recovery and scalability. Besides, confirm the availability, disaster recovery and scalability of this strategy according to the experiment data.