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从一个开发的角度看负载均衡和LVS - 更多技术 - 清泛网 - 专注C/C++及内核技术
...允许的情况下我们会采用软负载，软负载解决的两个核心问题是：选谁、转发，其中最著名的是LVS（Linux Virtual Server）。
三、软负载——LVS
LVS是四层负载均衡，也就是说建立在OSI模型的第四层——传输层之上，传输层上有...
为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...提交的仓库里。如果代码行数都计算在内的话，原本一个问题只需10行代码即可解决，程序员有可能编写5000行代码，来让功能更加灵活和兼容，这样，他的代码总量就会增加5000行了。
衡量生产力反而会使代码变的更糟，让项目...
What does $$ (dollar dollar or double dollar) mean in PHP?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Foreign keys in mongo?
...39ae90592692ccc9940"), "group" : "phones" }
You can use that ObjectId in order to do relations between documents.
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How to parse a CSV file using PHP [duplicate]
...; $i2max=count($row);
while($i2 < $i2max)// numeric loop (order really matters here)
//while( list($k, $v) = each($row) )
{ if($i2 != 0) $csv=$csv.$delim;
$v=$row[$fields[$i2]];
if($mode=='EXCEL') //EXCEL 2quote escapes
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Discuz 找回密码时提示参数错误 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 找回密码时提示参数错误source module member member_getpasswd.php第32行找到$uid = $_GET['uid'];在下方添加一行$sign = $_GET['sign'];tem...source\module\member\member_getpasswd.php
第32行找到
$uid = $_GET['uid'];
在下方添加一行
$sign = $_GET['sign'];
templat...
Illegal string offset Warning PHP
...s will generate an illegal offset warning because of datatype mismatch. In order to solve this, you can use settype:
$id = settype($array['id'],"integer"); // $id now contains an integer instead of a string
testimonial($id); // now running smoothly
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Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...佳资源利用率，贴在我们多线程 Java 编程论坛上最常见的问题之一是“怎样创建线程池？”。几乎在每个服务器应用程序中都会出现线程池和工作队列问题。本文中，Brian Goetz 探讨了线程池的动机、一些基本实现和调优技术以及...
Fastest way to convert string to integer in PHP
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I believe some reference or proof is in order!
– Mehran
Oct 29 '12 at 14:58
$int wo...
Access-Control-Allow-Origin error sending a jQuery Post to Google API's
...it was not cross domain but the same domain. I just added this line to the php file which was handling the ajax request.
<?php header('Access-Control-Allow-Origin: *'); ?>
It worked like a charm. Thanks to the poster
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