Debug 网络质量的时候，我们一般会关注两个因素：延迟和吞吐量（带宽）。延迟比较好验证，Ping 一下或者 mtr 一下就能看出来。这篇文章分享一个 debug 吞吐量的办法。| www.kawabangga.com
我们距离双线双活的完美方案越来越近了。在上文的链路聚合方案中，服务器和交换机之间的多条线路可以虚拟成一条，唯一的不足是故障检测比较复杂，MII Monitoring 和 ARP Monitoring 都不够完美。有什么办法，可以在出现问题的时候，让无论是交换机还是服务器都能快速发现问题并进行切换呢？| www.kawabangga.com
在上一篇文章中我们讨论了 active-backup 的模式，能够在一张线路出现故障的时候快速切换，配置也比较简单。但是这种方式有一个很大的缺点——就是明明我有两张卡，但是一次只能使用一张，只有在这张卡挂了的时候才使用另一张。| www.kawabangga.com
本文是重新认识 TCP 的握手和挥手一文的答案和解析。| www.kawabangga.com
I dabble with DNS for work, and I’m frequently checking if CNAMEs are properly configured. CNAMEs are Canonical NAMEs, kind of like nicknames, that indicate that one domain name is a nickname for another domain name. For example, you probably encounter CNAMEs that map from the classic www subdomain: www.example.com CNAME example.com This entry indicates that example.com is the Canonical NAME for www.example.com. When you go to www.example.com, your DNS resolver sees this entry and looks up ...| alexanderell.is
The Hypertext Transfer Protocol (HTTP) is a stateless application-level protocol for distributed, collaborative, hypertext information systems. This document provides an overview of HTTP architecture and its associated terminology, defines the "http" and "https" Uniform Resource Identifier (URI) schemes, defines the HTTP/1.1 message syntax and parsing requirements, and describes related security concerns for implementations.| IETF Datatracker