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浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的处理能力,那么接收方会出现丢包。为了避免出现此类问题,流量控制要求数据传输双方在每次交互时声明各自的接收窗口「rwnd」大小,用来表示自己最大能保存多少数据,这主要是针对接收方而言的,通俗点儿说就是让发...
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What is stdClass in PHP?

...inting this out). It is useful for anonymous objects, dynamic properties, etc. An easy way to consider the StdClass is as an alternative to associative array. See this example below that shows how json_decode() allows to get an StdClass instance or an associative array. Also but not shown in this...
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Why shouldn't I use mysql_* functions in PHP?

... { $stmt = $db->query("SELECT * FROM table"); return $stmt->fetchAll(PDO::FETCH_ASSOC); } //Then later try { data_fun($db); } catch(PDOException $ex) { //Here you can handle error and show message/perform action you want. } Also, you can handle by or die() or we can say like...
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Parsing a string into a boolean value in PHP

...s - it handles any casing you can imagine for $value (false, FALSE, FalSe, etc.) – Eric Caron Nov 12 '13 at 21:11 Bork...
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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

创建增量同步Oracle物化视图问题我们采用Oracle的物化视图增量刷新机制定时将数据库A上的某个表的数据同步到另一个数据库B上。我们常用的最简单的实现步骤是这样。首先在数...我们采用Oracle的物化视图增量刷新机制定时将数...
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迅雷发布无限节点CDN 每GB仅0.1元 - 资讯 - 清泛网 - 专注C/C++及内核技术

...欠发达地区节点资源则明显不足,这种资源分布不均匀的问题,直接影响了CDN的价值。 与众CDN服务商节点增加方式不同的是,迅雷在业内启用个人节点,通过连接至千万个家庭路由的赚钱宝们,织成一张节点均匀密布于全网的...
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WAMP/XAMPP is responding very slow over localhost

...Confirm the new registry value contains the required data. Change your etc/hosts If you use virtual hosts don't add each virtual host on a new line. Instead list them like the following. 127.0.0.1 site-a site-b site-c I also added 127.0.0.1 127.0.0.1 since I heard this somehow im...
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线程访问窗口资源的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

线程访问窗口资源的问题在开个线程时常为所开的线程传入个窗口参数(cwnd),这里里面有个很大的隐患就是当做CWnd::AssertValid()检查,就会遇到断言失败。具...时常为所开的线程传入个窗口参数 (cwnd),这里里面有个很大的...
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PHP Array to CSV

...' format by built in php function fputcsv takes care of commas, quotes and etc.. Look at https://coderwall.com/p/zvzwwa/array-to-comma-separated-string-in-php http://www.php.net/manual/en/function.fputcsv.php share ...
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一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术

...事的方式,逐步告诉大家比特币提出的动机、解决了什么问题以及一些关键组件的目标和设计方案。 问题的提出 我们先从比特币产生的动机开始。 以物易物的比特村 话说在这个世界上,有一个叫比特村的小村庄,村庄共有...