记一次Kubernetes/Docker网络排障 | | 酷 壳 – CoolShell

因为当时还在开车,在等红灯的时候,我感觉到有点像 NAT 的网络中服务端开启了 tcp_tw_recycle 和 tcp_tw_reuse 的症况(详细参看《TCP的那些事(上)》),所以,让用户查看了一上TCP参数,发现用户一个TCP的参数都没有改,全是默认的,于是我们排除了TCP参数的问题。 Source: 记一次Kubernetes/Docker网络排障 | | 酷 壳 – CoolShell

与 JOSE 战斗的日子 – 写给 iOS 开发者的密码学入门手册 (基础)

基础 – 什么是 JWT 以及 JOSE (本文) 理论 – JOSE 中的签名和验证流程 实践 – 如何使用 Security.framework 处理 JOSE 中的验证 全部读完的话应该能对网络相关的密码学有一个肤浅的了解,特别是常见的签名算法和密钥种类,编码规则,怎么处理拿到的密钥,怎么做签名验证等等。如果你在工作中有相关需求,但不知道如何下手的话,可以仔细阅读整个系列,并参看开源的 LINE SDK Swift 的相关实现,甚至直接 copy 部分代码 (如果可以的话,也请顺便点一下 star)。如果你只是感兴趣想要简单了解的话,可以只看 JOSE 和 JWT 的基础概念和理论流程部分的内容,作为知识面的扩展,等以后有实际需要了再回头看实践部分的内容。 https://onevcat.com/2018/12/jose-1/  

kbd-audio/README.md at master · ggerganov/kbd-audio

This is a collection of command-line and GUI tools for capturing and analyzing audio data. The most interesting tool is called keytap – it can guess pressed keyboard keys only by analyzing the audio captured from the computer’s microphone. Source: kbd-audio/README.md at master · ggerganov/kbd-audio

Microsoft wins $480M military contract to outfit soldiers with HoloLens AR tech | TechCrunch

Obviously, Microsoft wouldn’t just be planning to take what it’s been selling to factory workers and put it onto a battlefield, but the system requirements outlined in the contract already seem to eclipse what the current generation HoloLens optics are capable of, including items like the device’s FoV, which will have a requirement of between … [Read more…]

Making government as a platform real – Public Digital

If you want a natively digital nation, or a state, or a city, or whatever, my message today is you actually need to be bold enough to create some new institutions; institutions that are of the internet, not on the internet. Source: Making government as a platform real – Public Digital