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搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...操作，方便和主服务器进行对比数据是否同步还可以用于错误恢复。
如果集群中大部分服务器down机了，保留活着的节点都为 secondary状态并停止，不选举了。
如果集群中选举出来的主节点或者所有从节点最后一次同步时间看起...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...= new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYear()); 跟着...
CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛，有思想、有深度
...#/usr/local/php/sbin/php-fpm start
在启动PHP-FPM时会报上面这个错误，原因是PHP-FPM自己不知道以那个用户和组运行PHP，所以我们要修改一个文件，把文件中的注释去掉即可（打开文件把红色部分删除），然后PHP-FPM会以nobody用户和组去...
Can't find the PostgreSQL client library (libpq)
I'm trying to install PostgreSQL for Rails on Mac OS X 10.6. First I tried the MacPorts install but that didn't go well so I did the one-click DMG install. That seemed to work.
...
How can I give the Intellij compiler more heap space?
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Current version:
Settings (Preferences on Mac) | Build, Execution, Deployment | Compiler |
Build process heap size.
Older versions:
Settings (Preferences on Mac) | Compiler | Java Compiler | Maximum heap size.
Compiler runs in a separate JVM by default so IDEA hea...
jQuery Event Keypress: Which key was pressed?
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@VladimirPrudnikov Oh, oh, Ahhhh! Ahh! there were mac's eveywhere at that link - the humanity!!!
– Ben DeMott
Jul 6 '12 at 20:41
1
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How to use mongoimport to import csv
...g 0 records. I had saved my file that didn't work using the OSX Excel for Mac 2011 version using the default "Save as.." "xls as csv" without specifying "Windows Comma Separated(.csv)" format specifically. After researching this site and trying the "Save As again using "Windows Comma Separated (.c...
What is the difference between Sublime text and Github's Atom [closed]
...e. Per example, at the time of this writing, Atom is only available on the Macintosh while Sublime Text is already multiplatform.
Can I use the themes, schemes and packages from Sublime as is, like Sublime could do with text mate.
The short answer is no, but because of Atom's hackability, it will...
Best programming based games [closed]
Back when I was at school, I remember tinkering with a Mac game where you programmed little robots in a sort of pseudo-assembler language which could then battle each other. They could move themselves around the arena, look for opponents in different directions, and fire some sort of weapon. Pretty ...
How to install an apk on the emulator in Android Studio?
...t the top with all that CLI stuff is ridiculous. I tried using "adb" on my Mac and it launched some kind of service, waited for a while, and ultimately failed (I had to kill the process). Drag-and-drop (I should have thought of that before searching online, duh) worked quickly on the first try witho...