秒杀参考连接

秒杀 参考文章：

https://baijiahao.baidu.com/s?id=1704819052033948174&wfr=spider&for=pc

https://wenku.baidu.com/view/698a2541f6335a8102d276a20029bd64783e629d.html

http://t.zoukankan.com/yaopengfei-p-12418229.html