背景：
项目调用了一个内部接口，查看接口返回的内容，看到X-Powered-By: ARR/3.0，出于好奇百查了一下
Application Request Routing (ARR) is a feature in IIS that allows you to set up a web farm and load balance the requests. ARR sits within IIS Manager and provides load balancing, caching, and health monitoring features.
这句话告诉我们，ARR是IIS服务器的一个功能特性，由此我们可以推断我们请求的接口服务很可能是部署在Windows环境
参考资料：
https://www.stevefenton.co.uk/blog/2022/02/load-balancing-with-iis-and-application-request-routing/
标签：load,ARR,IIS,Powered,接口,3.0 From： https://www.cnblogs.com/jamstack/p/17385060.html