本书写了一些目前的NoSql的一些主要技术，算法和思想。同时列举了大量的现有的数据库实例。读完全篇，相信读者会对NoSQL数据库了解个大概。-Some of the current NoSql writing some of the major technologies, algorithms and ideas. Also cited a large number of existing database instance. Read full articles, I believe readers will understand the one about NoSQL database.