好的博客

Spring 

http://www.w3cschool.cn/wkspring/  　　　　　　W3CSchool

Spring in Action

Mycat
http://blog.csdn.net/zhxdick/article/details/50667744

Mycat 源码解读
http://blog.csdn.net/column/details/15200.html

Mycat性能测试
http://blog.csdn.net/mchdba/article/details/50727099

shell编程
http://c.biancheng.net/cpp/view/6999.html

es首页
https://www.elastic.co/guide/en/elasticsearch/reference/current/getting-started.html

https://www.elastic.co/guide