http://colobu.com
http://www.ibm.com
https://www.ibm.com/developerworks/cn/
http://jm.taobao.org/
http://www.gfsoso.com/
http://laoshandaoshi.so/?gws_rd=ssl
http://blog.jobbole.com/56256/
http://weekly.manong.io/
http://ju.outofmemory.cn
http://redisdoc.com/
http://www.tutorialspoint.com/ruby/
http://doc.rubyfans.com
http://www.brendangregg.com/linuxperf.html
http://ghendry.net/refactor.html
mysql锁:http://blog.csdn.net/dc_726/article/details/8576151
索引操作:http://blog.chinaunix.net/uid-25063573-id-3032578.html
执行计划:http://blog.csdn.net/shen516/article/details/8242506
http://www.cnblogs.com/ggjucheng/archive/2012/11/11/2765237.html