CDN和带有查询字符串的URL [英] CDN and URL's with query-strings

问题描述

我们在Web服务器上有一个图像文件夹，可以通过CDN发布。有时，我们会在URL后面附加类似查询字符串的语法，以帮助我们刷新已更改的内容，即使这种情况很少发生。例如：

We have an images folder on our web servers that we may publish via a CDN. Sometimes we append query-string like syntax to URL's to help us freshen content that has changed, even though it rarely does. Example:

/images/file.png?20090821

URL是否可以在您的平均内容传送网络中使用？

will URL's like this work with your average content-delivery-network?

推荐答案

<是，我们使用Akamai，它会保留每个请求的Distict URL（包括查询字符串）的缓存副本。因此，对/images/file.png?20090821的第一个请求将转到原始服务器。之后对/images/file.png?20090821的请求将从Akamai服务器获取图像。第二天，假设img src更改为/images/file.png?20090822，则第一个请求将再次发送到原始服务器。

Yes, We use Akamai, which keeps a cached copy of each distict url requested including the querystring. So the first request for /images/file.png?20090821 will go to the origin server. Requests there after for /images/file.png?20090821 will get the image from the Akamai servers. The next day, assuming the img src changes to /images/file.png?20090822, the first request will go to the origin server again.

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