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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...
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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...
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How do I get a file name from a full path with PHP?

... You're looking for basename. The example from the PHP manual: <?php $path = "/home/httpd/html/index.php"; $file = basename($path); // $file is set to "index.php" $file = basename($path, ".php"); // $file is set to "index" ?> ...
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Cached, PHP generated Thumbnails load slowly

...t from the various waterfall graphs shown here is the main bottleneck: the PHP-generated thumbnails. The protocol-less jquery loading from CDN advised by David got my bounty, albeit making my site only 3% faster overall, and while not answering the site's main bottleneck. Time for for clarification ...
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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...
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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...
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micro:bit 微控制器教程 · App Inventor 2 中文网

...感器数据监控 3. 双向通信 常见问题 Q: 扫描不到 micro:bit 设备? Q: 连接失败? Q: 无法接收温度数据? Q: 控制指令无效? 扩展功能 1. 添...
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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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How to convert an array to object in PHP?

...error Fatal error: Cannot re-assign $this in /var/www/bot/inc/twitter-bot.php on line 10 – streetparade Dec 8 '09 at 19:52 1 ...
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PHP Fatal error: Using $this when not in object context

... In my index.php I'm loading maybe foobarfunc() like this: foobar::foobarfunc(); // Wrong, it is not static method but can also be $foobar = new foobar; // correct $foobar->foobarfunc(); You can not invoke method this w...