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Which timestamp type should I choose in a PostgreSQL database?
...les: "User 123 logged in" or "a graduation ceremonies start at 2011-05-28 2pm PST." Regardless of your local time zone, if you could teleport to where the event occurred, you could witness the event happening. Most time data in a database is absolute (and therefore should be TIMESTAMP WITH TIME ZONE...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...ly in specific circumstances (e.g. when the script(s) is executed in development/debug mode, you can either set PERL5LIB manually, or pass the -I option to perl.
If the modules need to be used only for specific scripts, by all users using them, use use lib/no lib pragmas in the program itself. It al...
Windows 7 SDK installation failure
...ok in the log file to see what's going on. In my log file I had:
6:17:07 PM Saturday, October 01, 2011: C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\SFX\vcredist_x64.exe installation failed with return code 5100
so as that above web page suggested, I uninstalled both copies of the Visual C+...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...以说是变相的实现了Memcached的复制,这更是意外之喜。
安装
为了让文章更具完整性,我们选择从源代码安装MySQL,需要注意的是早期的版本有内存泄漏,所以推荐安装最新的稳定版,激活WITH_INNODB_MEMCACHED即可:
shell> groupadd m...
VS2012警告未能加载包“Visual C++ package” - C/C++ - 清泛网 - 专注C/C++及内核技术
VS2012警告未能加载包“Visual C++ package”安装了windows更新后就出现VS2012无法打开项目的问题,还报各种加载失败。解决方法:到微软官网下载VS2012更新KB2781514,大概1.12MB链接地...安装了windows更新后就出现VS2012无法打开项目的问题...
NSIS内置路径命令详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
NSIS内置路径命令详解本文收集了nsis打包所需要用到的安装包安装路径命令,为读者解释常用命令的含义,适合nsis初学者学习使用。$INSTDIR=默认安装路径 !
$PROGRAMFILES=C:\Program Files!
$TEMP=临时文件夹!
$DESKTOP=桌面!
$SYSDIR=C:\W...
【解决】bufferevent_openssl.c:228:19: error: storage size of \'methods...
...: error: storage size of 'methods_bufferevent' isn't knownxunsearch 升级 安装的时候报 libevent 编译错误:bufferevent_openssl c:228:19: error: storage size of & 39;methods_bufferevent& 39; isn& 39;t knownstatic BIO_ xunsearch 升级/安装的时候报 libevent 编译错误:
buff...
Linux 搭建NTP时间同步服务器 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...59服务器同步时间。
NTP服务器配置
1、检查系统是否安装了NTP服务,如果提示未安装请在linux ISO镜像光盘目录下packages找到此安装包或者访问 http://rpmfind.net/ 网址查找NTP安装包。
2、配置NTP服务器(设定10.8.9.159为NTP服务器...
PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要看看它漂亮的界面就会喜欢上它:
sentry
关于如何安装 Sentry,官方文档里已经给出了详细的说明,建议大家仔细阅读,一般通过 Virtualenv 来安装 Sentry,具体可以参考:学习搭建Python环境。
提醒:我在安装 7.5 的时候,测...
IIS配置常见问题汇总(持续更新 ) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...序。如果应下载文件,请添加 MIME 映射。
原因:没有安装IIS的ASP.NET组件
解决:添加/删除程序,IIS,勾选安装“.net扩展性”和“ASP.NET”.
2. HTTP错误500.21 - Internal Server Error
处理程序“PageHandlerFactory-Integrated”在其模块列...