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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...默认启用的。你需要通过命令去加载 FreeBSD 的 DTrace 内核模块。Oracle 也有在它自己的 Oracle Linux 操作系统发行版当中开始针对 Linux 内核进行 DTrace 移植。不过 Oracle 的移植工作好像一直没有多少起色,毕竟 Linux 内核并不是 Oracle ...
Detect if the app was launched/opened from a push notification
...r is pulled from the top and overlays the app 2) When the iOS's panel with wifi/BT/etc is pulled from the bottom and overlays the app. In all three cases just the applicationWillResignActive is called and then the applicationDidBecomeActive. So after the applicationWillResignActive is called do not ...
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...好在逻辑简单,你可以自己实现,当然也可以使用第三方模块,比如 nginx_cache_purge。
当系统正常时,运行于动态模式,数据通过PHP-FPM渲染;当系统异常时,全局缓存被激活,运行于静态模式,数据通过缓存渲染。通过测试发现...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...7,32767);
m_allmsg.ReplaceSel(msg);
}else{
MessageBox("无法连接到服务器!");
closesocket(sock);
WSACleanup();
}
}
GetDlgItem(IDC_DISCONNECT)->EnableWindow(TRUE);
GetDlgItem(IDC_SEND)->EnableWindow(TRUE);
GetDlgItem(IDC_CHANGENAME)->EnableWindow(TRUE)...
AI2 Media Notification
...operated, this function gradually switches everything down (display, CPU, WiFi, etc.). In order to bypass Doze mode effectively, it is necessary to create a foreground service. A lot of useful background information can be found in the ZEBRA Developer Portal: Keeping your Android application runn...
UDP vs TCP, how much faster is it? [closed]
...ncreases (which can be seen as a proxy for queuing delay) are/can be (e.g: WiFi networks may lose packets without real congestion, fooling some TCP congestion control algorithms into congestion avoidance) congestion indicators.
– ninjalj
Mar 31 '14 at 11:34
...
What are the security risks of setting Access-Control-Allow-Origin?
...ate company data, but this can only be accessed if you're on the company's wifi network. It's not safe to add Access-Control-Allow-Origin: * to this resource, as it's protected using something other than standard credentials. Otherwise, a bad script could use you as a tunnel to the intranet.
Rule of...
技术人员如何创业《三》- 合伙人的分工 - 资讯 - 清泛网 - 专注C/C++及内核技术
...这些东西也可以开发系统,但是如果不建立,后续开发的模块越多就越乱。导致到了最后添加一个简单的新需求都会寸步难行,制度也一样,一开始没有良好的企业文化和制度,这样建立的团队也是散的、没有战斗力。
产品设...
剖析程序的内存布局 - C/C++ - 清泛网 - 专注C/C++及内核技术
...下。一来自己复习,二来与大家分享。]
内存管理模块是操作系统的心脏;它对应用程序和系统管理非常重要。今后的几篇文章中,我将着眼于实际的内存问题,但也不避讳其中的技术内幕。由于不少概念是通用的,所以...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...便的数据仓库解决方案,就是SQL接口,跟各个云服务无缝连接,最大特点就是快,在TB到PB级别非常好的性能,我在工作中也是直接使用,它还支持不同的硬件平台,如果想速度更快,可以使用SSD的,当然支持容量就小些。
Hadoop...