数据分析 BI基本架构和ETL理解 https://blog.csdn.net/duqiangatom/article/details/8308985 ETL https://blog.csdn.net/zhongguomao/article/details/53769919 大并发数据优化 https://www.cnblogs.com/chuncn/archive/2009/04/21/1440233.html