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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...避免用户错误。
Non-Voting：没有选举权的secondary节点，纯粹的备份数据节点。
6 设置隐藏节点(Hidden)
隐藏节点可以在选举中投票，但是不能被客户端引用，也不能成为主节点。也就是说这个节点不能用于读写分离的场景。
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win7 安装项目管理工具redmine2.5.1 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...到RailsInstaller的安装目录里面。我的是"C:\RailsInstaller\Ruby1.9.3\bin"
c) 创建数据库：
CREATE DATABASE redmine CHARACTER SET utf8;
CREATE USER 'redmine'@'localhost' IDENTIFIED BY 'my_password';
GRANT ALL PRIVILEGES ON redmine.* TO 'redmine'@'localhost';
flush PRIVILEGE...
`require': no such file to load — mkmf (LoadError)
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@lamplightdev Didnt work for me, ruby version was 1.9.3 and it was installing 1.8 If I tried to install ruby-dev
– Karthik T
Sep 5 '13 at 0:12
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十年磨一“饼” 一个70后连续创业者的心路历程 - 资讯 - 清泛网 - 专注C/C+...
...月！)
卷饼这个情结源于远在温哥华的姐妹小巴黎，我们纯粹瞎聊开始，她听我说开了十来年餐馆，传统行业里摸出了门道，遭遇过互联网公司经营的滑铁卢，说要搞点不一样的。从年初2月份算下来的三个月，隔着整个太平洋...
An error occurred while installing pg (0.17.1), and Bundler cannot continue
...or me, was Version 9.2.2.0, so they must have changed this location on the 9.3 release.
– Robertibiris
Apr 22 '14 at 13:20
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“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...
...纬度，即菜品本身的服务与上门送菜服务。这里走的就是纯粹的高价蔬菜销售。走高价很多网站很早就在玩，麦家生活馆把有机小青菜卖到十五块一斤，有机不行，还有进口蔬菜等上架，噱头是不缺乏的。而所谓的有机无污染也...
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
...出了新的要求，不再仅仅是人员数量的简单集合，也不是纯粹的内容采集，而是把一群真正对内容有兴趣的人集合在一起，不站队、不独占、不拉帮结派、不着急短期变现。在流量支持、资源输送、品牌规划、资金支持等全方面...
How to install psycopg2 with “pip” on Python?
...problem on CentOS 6. I would like to add that I did have to add /usr/pgsql-9.3/bin to $PATH. Here is a post giving an example of how to do that. serverfault.com/questions/102932/…
– Ryder Brooks
Feb 28 '14 at 0:41
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psql: FATAL: role “postgres” does not exist
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For postgres.app 9.3, they seem to have re-arranged the directories. I tried: /Applications/Postgres.app/Contents/Versions/9.3/bin/createuser -s postgres, but this generated the same eror message: "createuser: could not connect to database po...
How to convert C# nullable int to int
... all correct; I just wanted to add one more that's slightly cleaner:
v2 = v1 ?? default(int);
Any Nullable<T> is implicitly convertible to its T, PROVIDED that the entire expression being evaluated can never result in a null assignment to a ValueType. So, the null-coalescing operator ?? is ...