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https://www.tsingfun.com/it/tech/1055.html 

Nginx缓存解决方案:SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术

...多的时候,冗余的浪费将非常严重,此外还有数据一致性问题,所以它只是一个粗线条的解决方案。 对此类问题而言,SRCache是一个细粒度的解决方案。其工作原理大致如下: SRCache工作原理 当问题比较简单的时候,通常SRC...
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How to benchmark efficiency of PHP script

... If you actually want to benchmark real world code, use tools like Xdebug and XHProf. Xdebug is great for when you're working in dev/staging, and XHProf is a great tool for production and it's safe to run it there (as long as you read t...
https://bbs.tsingfun.com/thread-2529-1-1.html 

MIT已发布v2.76版本:支持iOS编译,苹果版App终于来了,中文网已完成升级!...

...限,以符合 Google Play 政策 修复嵌套文件夹中项目的排序问题 修复 lexvar 下拉菜单字段的背景颜色问题在导出的 PNG 文件中 修复了包含项目的项目会导致 APK 中功能不正确的错误 修复了格式错误的密钥库可能导致构建挂起的错...
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Why does Windows64 use a different calling convention from all other OSes on x86-64?

AMD has an ABI specification that describes the calling convention to use on x86-64. All OSes follow it, except for Windows which has it's own x86-64 calling convention. Why? ...
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What is the difference between an interface and abstract class?

...'t do anything. It's just a pattern. For example (pseudo code): // I say all motor vehicles should look like this: interface MotorVehicle { void run(); int getFuel(); } // My team mate complies and writes vehicle looking that way class Car implements MotorVehicle { int fuel; vo...
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...退出后执行如下命令使以上设置在当前窗口如果有配置有问题也可以提示。立即生效: source /home/oracle/.bash_profile 8、调整OS内核参数 设置原则: kernel.shmmax 为 4GB-1byte或一半的物理内存, 哪个值更低用哪个; fs.file-max 为512 * PROCESS...
https://www.tsingfun.com/it/cpp/2214.html 

服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的处理方法混为一谈,以为优化系统内核参数就可以解决问题,其实是不恰当的,优化系统内核参 数解决TIME_WAIT可能很容易,但是应对CLOSE_WAIT的情况还是需要从程序本身出发。现在来分别说说这两种情况的处理方法: 1.服务...
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Stack Memory vs Heap Memory [duplicate]

...C++ and I am always wondering what exactly is stack memory vs heap memory. All I know is when I call new, I would get memory from heap. If if create local variables, I would get memory from stack. After some research on internet, the most common answer is stack memory is temporary and heap memory is...
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Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升

...用Makefile时,有一些我们会经常使用,而且使用频率非常高的东西,比如,我们编译C/C++的源程序为中间目标文件(Unix下是[.o] 文件,Windows下是[.obj]文件)。本章讲述的就是一些在Makefile中的“隐含的”,早先约定了的,不需要...
https://www.tsingfun.com/it/cp... 

Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升

...用Makefile时,有一些我们会经常使用,而且使用频率非常高的东西,比如,我们编译C/C++的源程序为中间目标文件(Unix下是[.o] 文件,Windows下是[.obj]文件)。本章讲述的就是一些在Makefile中的“隐含的”,早先约定了的,不需要...