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^{前提:我不是要重新发明轮子,我只是想了解一下.}

输出缓存可以轻松实现:

//GetFromMyCache returns the page if it finds the file otherwise returns FALSE
if( ($page = GetFromMyCache($page_id)) !== FALSE )
{
   echo $page; //sending out page from cache
   exit();
}

//since we reach this point in code, it means page was not in cache
ob_start(); //let's start caching

//we process the page getting data from DB

//saving processed page in cache and flushing it out
echo CachePageAndFlush(ob_get_contents());

在 另一篇文章中解释得很好,并在另一篇文章中 解释.

但接下来是APC (默认情况下将包含在PHP6中).

1. APC是否曾经安装在服务器上的模块,现有的 PHP代码运行速度更快, …