服务器 - 静态文件通过PHP返回给客户端，性能折损大么？
大的音视频文件，都是分段发给客户端的吧，这个肯定要后台处理一下再发送。
对于图片这种资源，通过路径直接访问,如
www.x.com/xx/xx.jpg
和通过PHP返回
www.x.com/image/zzzzzzzz
通过参数zzzzzzzz找到相对应的图片路径，再用PHP返回，忽略找路径这个过程，后一种做法性能上如何评估，并发高一点，服务器会出现什么样的情况
回复内容：
大的音视频文件，都是分段发给客户端的吧，这个肯定要后台处理一下再发送。
对于图片这种资源，通过路径直接访问,如
www.x.com/xx/xx.jpg
和通过PHP返回
www.x.com/image/zzzzzzzz
通过参数zzzzzzzz找到相对应的图片路径，再用PHP返回，忽略找路径这个过程，后一种做法性能上如何评估，并发高一点，服务器会出现什么样的情况
现在的静态文件很多web服务器（比如nginx）都支持sendfile技术，基本不需要cpu参与处理，相比于php处理再发送性能肯定好很多呢
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