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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及核技术

...得到处理,但是因其他原因(比如网络不稳定),确认消息没有返回,那么这种情况下需要进行请求的重发,对请求的处理设计因重发因素需要考虑幂等性。 4) 监控 监控也是提高整个平台可用性的一个重要手段,多平台进行多个...
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How to determine whether a given Linux is 32 bit or 64 bit?

...gs in /proc/cpuinfo mean?" Among them, one is named lm: Long Mode (x86-64: amd64, also known as Intel 64, i.e. 64-bit capable) lm ==> 64-bit processor Or using lshw (as mentioned below by Rolf of Saxony), without sudo (just for grepping the cpu width): lshw -class cpu|grep "^ width"|uni...
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How to set Java environment path in Ubuntu

...t 46 Aug 25 2018 /etc/alternatives/java -> /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java Dig deeper: $ ls -l /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -rwxr-xr-x 1 root root 6464 Mar 14 18:28 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java As it is not being referenced to any other dire...
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Git 工具 - 子模块(submodule):一个仓库包含另一个仓库 - 开源 & Github -...

...克隆这样的项目时,默认会包含该子模块目录,但其中还没有任何文件: $ git clone https://github.com/chaconinc/MainProject Cloning into 'MainProject'... remote: Counting objects: 14, done. remote: Compressing objects: 100% (13/13), done. remote: Total 14 (delt...
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clang: how to list supported target architectures?

.../ PPC: powerpc ppc64, // PPC64: powerpc64, ppu r600, // R600: AMD GPUs HD2XXX - HD6XXX sparc, // Sparc: sparc sparcv9, // Sparcv9: Sparcv9 systemz, // SystemZ: s390x tce, // TCE (http://tce.cs.tut.fi/): tce thumb, // Thumb: thumb, thumbv.* x86, // X86...
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关于php的socket初探 - PHP - 清泛IT论坛,有思想、有深度

...信的机制,这属于计算机网络这块的东西,与实际的编程没有太大的关联,这里就不深入说明了,有兴趣的可以问度娘。而从程序的角度来看,这样的理解更合适, socket起源于Unix,而Unix/Linux基本哲学之一就是“一切皆文件”...
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App Inventor 2 数学代码块 · App Inventor 2 中文网

... 1010 | 1000 1010 10 由于 App Inventor 没有移位操作,只能用一个列表存 0001 0010 0100….然后拿出来按位操作,这样代码量相比多分支判断会少很多,逻辑也更清晰。 参考代码如下: 测试代码如下: 测...
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How to tell if JRE or JDK is installed

... in the screenshot, my Java home directory is /usr/lib/jvm/java-11-openjdk-amd64. So accordingly I need to add JAVA_HOME to my bash profile (.bashrc, .bash_profile, etc. depending on your OS) like below: JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64" Here you go! ...
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Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after

...o have to check C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64 where there is another cvtres.exe. share | improve this answer | follow | ...
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华为公司的新产品研发流程管理 - 项目管理 - 清泛网 - 专注C/C++及核技术

...关取消或调整的必要信息或是已知的也或是可知的,只是没有人提出正确的问题或没有人做出正确的决策而已。   研究表明,如果一个公司较早做出取消或调整的决定,那么在那些没有投入市场的产品上所浪费的便要减少许...