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LR性能指标解释 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...深入地分析网站上那些下载很慢的图形或中断的连接等有问题的
元素。
1、Web Page Breakdown（页面分解总图）
"页面分解"显示某一具体事务在测试过程的响应情况，进而分析相关的事务运行是否正常。
"页面分解"图可以按下面...
What is an ORM, how does it work, and how should I use one? [closed]
... case with a pseudo language:
You have a book class, you want to retrieve all the books of which the author is "Linus". Manually, you would do something like that:
book_list = new List();
sql = "SELECT book FROM library WHERE author = 'Linus'";
data = query(sql); // I over simplify ...
while (row ...
Disabling Strict Standards in PHP 5.4
...to this I was running my site on 5.3.8. Unfortunately, php 5.4 combines E_ALL and E_STRICT , which means that my previous setting for error_reporting does not work now. My previous value was E_ALL & ~E_NOTICE & ~E_STRICT Should I just enable values one at a time?
...
MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...档中相关说明。
MySQL需要多个表，多次查询才能搞定的问题，MongoDB只需要一个表，一次查询就能搞定，对比完成，相对MySQL而言，MongoDB显得更胜一筹，至少本例如此
MySQL MongoDB
[科普] __MACOSX是什么文件夹？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...者就可以把这个压缩包上传到网上供人下载。但是有一个问题，苹果公司和其它的大的软件公司一样，十分擅长曲解和附会用户的意思，它很多时候并不是完全按照你的意思去做的。例如在这种情况下，你以为Mac仅仅是把你想要...
Internal Error 500 Apache, but nothing in the logs?
...
Please Note: The original poster was not specifically asking about PHP. All the php centric answers make large assumptions not relevant to the actual question.
The default error log as opposed to the scripts error logs usually has the (more) specific error. often it will b...
Unexpected Caching of AJAX results in IE8
...reventing IE from caching the response.
Note that if you have other Ajax calls going on where you do want caching, this will disable it for those too. In that case, switch to using the $.ajax() method and enable that option explicitly for the necessary requests.
See http://docs.jquery.com/Ajax/jQu...
Turn off deprecated errors in PHP 5.3
My server is running PHP 5.3 and my WordPress install is spitting these errors out on me, causing my session_start() to break.
...
How to use PHP OPCache?
PHP 5.5 has been released and it features a new code caching module called OPCache, but there doesn't appear to be any documentation for it.
...
VS2005混合编译ARM汇编代码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nction wmain
fatal error LNK1120: 2 unresolved externals
出现这个问题原因是：
汇编源文件再编译以后，函数名称以及变量名称没有做任何的更改，而C++源码在经过C++编译器编译以后，函数名称和变量名称都已经有过变化（可查看编译...