The database we use Berkeley open source embedded database to reduce the cost between thread and the cost of SQL language query and implement, prodigious brings up the system performance.

• 数据库采用Berkeley 开源嵌入式数据库,可以减少繁琐的进程间通信,同时避免对结构化查询语言进行解析和处理所需的开销,大大提高了系统的性能。