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灾难恢复RTO 与 RPO - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

... 所谓 RTO,Recovery Time Objective,它是指灾难发生后,从 IT 系统当机导致业务停顿之时开始,到 IT 系统恢复至可以支持各部门运作、恢复运营之时,此两点之间的时间段称为 RTO。 所谓 RPO,Recovery Point Objective,是指从系统和应...
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涨姿势:全套支付宝系统架构(内部架构图) - 更多技术 - 清泛网 - 专注C/C...

涨姿势:全套支付宝系统架构(内部架构图)近期,支付宝机房故障,不仅引得网友为马云担心,还为自己在支付宝余额宝各种宝的巨款担心。 为了让大家更好的了解支付宝系统的运作,网友...近期,支付宝机房故障,不仅引...
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Win7以上操作系统清理系统图标缓存脚本 - 脚本技术 - 清泛IT论坛,有思想、有深度

...m 关闭Windows外壳程序explorer taskkill /f /im explorer.exe rem 清理系统图标缓存数据库 attrib -h -s -r "%userprofile%\AppData\Local\IconCache.db" del /f "%userprofile%\AppData\Local\IconCache.db" attrib /s /d -h -s -r "%userprofile%\AppData\Local\Microsoft\Wi...
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本地通知使用指导 · App Inventor 2 中文网

...明底的简单图形素材(彩色图片会显示成方块);留空用系统图标; 颜色(Color):小图标和按钮文字的强调色; 通知里的大图标固定使用 App 图标。 常见问题 现象 原因与处理 ...
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How to check if running in Cygwin, Mac or Linux?

I have a shell script that is used both on Windows/Cygwin and Mac and Linux. It needs slightly different variables for each versions. ...
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Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using “C”

I would like install R on my laptop Mac OS X version 10.7.3 6 Answers 6 ...
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sed command with -i option failing on Mac, but works on Linux

...k of space between -i and '' and the -e to make it work on new versions of Mac and on GNU): sed -i'.original' -e 's/old_link/new_link/g' * Create 2 backup files like: File1.txt.original File2.cfg.original There is no portable way to avoid making backup files because it is impossible to find a ...
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Where to install Android SDK on Mac OS X?

Where should the Android SDK be installed on Mac OS X? 12 Answers 12 ...
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C/C++中退出线程的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...++对象均将通过它们的撤消函数正确地撤消。 (2)操作系统将正确地释放线程堆栈使用的内存。 (3)系统将线程的退出代码(在线程的内核对象中维护)设置为线程函数的返回值。 (4)系统将递减线程内核对象的使用计...
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Mac zip compress without __MACOSX folder?

When I compress files with the built in zip compressor in Mac OSX, it results in an extra folder titled "__MACOSX" created in the extracted zip. ...