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https://www.tsingfun.com/it/tech/896.html 

Android微信智能心跳方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...确的方向,但提出的问题帮助我们更快的补齐需要面对的核心问题。这两个问题让我和春哥意识到如果能很好的解决,就可以给出一个比较好的心跳方案。第一个问题我和春哥开始就意识到,第二个问题我们确实在一开始时疏忽...
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CDN(内容分发网络)技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...而内容管理和全局的网络流量管理(Traffic Management)是CDN的核心所在。通过用户就近性和服务器负载的判断,CDN确保内容以一种极为高效的方式为用户的请求提供服务。总的来说,内容服务基于缓存服务器,也称作代理缓存(Surrogate...
https://www.tsingfun.com/it/bigdata_ai/750.html 

分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...最后真正提交。三段提交的示意图如下: 三段提交的核心理念是:在询问的时候并不锁定资源,除非所有人都同意了,才开始锁资源。 理论上来说,如果第一阶段所有的结点返回成功,那么有理由相信成功提交的概率很大。...
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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...for_each允许。(这是一个深层次的问题,也是一个涉及STL核心的问题,待解) 第38条:遵循按值传递的原则来设计函数子类。 在STL中,函数对象在函数之间来回传递的时候也是像函数指针那样按值传递的。因此,你的函数...
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Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术

Window FeaturesThis overview discusses features of windows such as window types, states, size, and position.Window TypesOverlapped...This overview discusses features of windows such as window types, states, size, and position. Window Types Overlapped Windows Pop-up Windows Child Windows ...
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How to find the operating system version using JavaScript?

... If you list all of window.navigator's properties using console.log(navigator); You'll see something like this # platform = Win32 # appCodeName = Mozilla # appName = Netscape # appVersion = 5.0 (Windows; en-US) # language = en-US # mimeTyp...
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Get operating system info

...t it does is that, it sniffs your core operating system model, for example windows nt 5.1 as my own. It then passes windows nt 5.1/i to Windows XP as the operating system. Using: '/windows nt 5.1/i' => 'Windows XP', from an array. You could say guesswork, or an approximation yet nonetheless p...
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来自微软的一手内幕:Windows 10是怎么出炉的 - 创意 - 清泛网 - 专注C/C++及内核技术

来自微软的一手内幕:Windows 10是怎么出炉的研发团队更加开放、坦诚和注重反馈。7月29日,微软为之倾注全部心力的Windows 10操作系统终于发布并推送给用户。在长达近一年的时间里,你也许看到听到太多微软的负面消息,也体...
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What is the difference between window, screen, and document in Javascript?

... Window is the main JavaScript object root, aka the global object in a browser, also can be treated as the root of the document object model. You can access it as window window.screen or just screen is a small information ob...
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window.location.href and window.open () methods in JavaScript

What is the difference between window.location.href and window.open () methods in JavaScript? 6 Answers ...