Just One Pure ITer
High Concurrency, Circuit Breaker, Rate Limit, Load Balance,etc...
by leelight · Published December 15, 2018
有朋友问我，DNS轮询是不是过时的技术了？有了反向代理层（Nginx、LVS、F5等），是不是就不需要DNS轮询了？ 然而，反向代理层绝不能替代DNS轮询！
最近在进行前端面试方面的一些准备，看了网上许多相关的文章，发现有一个问题始终绕不开: 在浏览器中输入URL到整个页面显示在用户面前时这个过程中到底发生了什么。仔细思考这个问题，发现确实很深，这个过程涉及到的东西很多。这个问题的回答真的能够很好的考验一个web工程师的水平
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![[转]“反向代理层”绝不能替代“DNS轮询”！](http://www.mobabel.net/wp-content/themes/hueman/assets/front/img/thumb-medium-empty.png)
