Tornado

>>1 Tornado基本概念

[**>>2 Tornado自定义session 与 一致性哈希，构建分布式session**](http://www.cnblogs.com/big-handsome-guy/p/8654462.html)
[**>>3 Tornado 异步非阻塞**](http://www.cnblogs.com/big-handsome-guy/p/8661101.html)