微信红包的架构设计简介
https://www.zybuluo.com/yulin718/note/93148
微信红包金额分配的算法
http://www.itnose.net/detail/6261787.html
http://timyang.net/architecture/wechat-red-packet/
微信红包的算法实现探讨
http://blog.cqcoder.com/%E5%BE%AE%E4%BF%A1%E7%BA%A2%E5%8C%85%E7%9A%84%E7%AE%97%E6%B3%95%E5%AE%9E%E7%8E%B0%E6%8E%A2%E8%AE%A8/
微信红包的随机算法是怎样实现的？
http://www.zhihu.com/question/22625187
抢红包的红包生成算法
http://blog.csdn.net/hengyunabc/article/details/19177877/