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Difference between scaling horizontally and vertically for databases [closed]

...ources whereas Vertical scaling means that you scale by adding more power (CPU, RAM) to an existing machine. An easy way to remember this is to think of a machine on a server rack, we add more machines across the horizontal direction and add more resources to a machine in the vertical direction.   ...
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Android emulator failed to allocate memory 8

....lcd.density=160 sdcard.size=300M skin.path=1280x800 skin.name=1280x800 hw.cpu.arch=arm abi.type=armeabi-v7a hw.cpu.model=cortex-a8 vm.heapSize=48 hw.ramSize=1024MB image.sysdir.1=system-images\android-16\armeabi-v7a\ This config shows the software keys too ...
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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 -...

...方库,或者你独立开发的,用于多个父项目的库。 现在问题来了:你想要把它们当做两个独立的项 有种情况我们经常会遇到:某个工作中的项目需要包含并使用另一个项目。 也许是第三方库,或者你独立开发的,用于多个父...
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Command to get time in milliseconds

...ime. $ time date +%s%N 1597103627N date +%s%N 0.00s user 0.00s system 63% cpu 0.006 total Python is still improving it's VM start time, and it is not as fast as ahead-of-time compiled code (such as date). On my machine, it took about 30ms - 60ms (that is 5x-10x of 6ms taken by date) $ time python ...
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Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...时服务,例如股票,聊天室,在线游戏等实时性要求比较高的服务。 为什么要用 Web API Web API最重要的是可以构建面向各种客户端的服务。另外与WCF REST Service不同在于,Web API利用Http协议的各个方面来表达服务(例如 URI/request r...
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Pulse Secure解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...ure解决方案概述一段时间以来,企业始终在面对接入控制问题。这个需求始自于扩展企业,在此,远程用户常使用未加管理或不可管理的设备接入关键的局域网...概述 一段时间以来,企业始终在面对接入控制问题。这个需求始...
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互联网医疗新格局:顶级医生入场 - 资讯 - 清泛网 - 专注C/C++及内核技术

...不到好医生的原因是,互联网问诊多为“头疼脑热”的小问题,最优秀的医生并不愿意花时间。但顶级医生现在也需要一个分诊机制来获得更高质量的患者。 文/温泉 自2013年下半年以来,因一系列政策利好,互联网医疗行业...
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为什么说自媒体到了最危险的时期? - 资讯 - 清泛网 - 专注C/C++及内核技术

...最主要的几点包括盈利模式,与科技自媒体作者的关系等问题。是非对错暂且不论,在这场争论中,不管是支持的,还是反对甚至泼脏水的,各有各的观点。很多人认真的或若有其事的分析着虎嗅的招股书,有人甚至说虎嗅已经...
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Bash script to calculate time elapsed

.... %[p][l]R The elapsed time in seconds. %[p][l]U The number of CPU seconds spent in user mode. %[p][l]S The number of CPU seconds spent in system mode. %P The CPU percentage, computed as (%U + %S) / %R. The optional p is a digit specifying the precision, the number of frac...
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?

...erations (double precision) per cycle be achieved on a modern x86-64 Intel CPU? 4 Answers ...