传统（并且糟糕的）的方式是使用Apache的mod_php。Mod_php将PHP 绑定到Apache自身，但是Apache对于该模块功能的管理工作非常糟糕。一旦遇到较大的流量， 就会遭受严重的内存问题。
不知如何理解？
回复内容：
传统（并且糟糕的）的方式是使用Apache的mod_php。Mod_php将PHP 绑定到Apache自身，但是Apache对于该模块功能的管理工作非常糟糕。一旦遇到较大的流量， 就会遭受严重的内存问题。
不知如何理解？
配置加载mod_php模块后，其便是apahce进程本身一部分，每个新的apache子进程都会加载次模块，所以会导致一些不必要的内存资源浪费。 php-fpm是单独的一个进程，不存在多次加载到内存的情况，但需要解析php时才会消耗内存。
挖坟，区别对待。
如果处理图片等操作比较耗时，还是要用mod_php这种方式，开启一个进程处理。否则，有限的php-fpm进程会被耗时的操作阻塞。
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