PageSpeed和CDN图像 [英] PageSpeed and CDN images

问题描述

我目前有一个站点，该站点通过AWS Cloudfront为位于AWS S3上的图像提供服务.

I currently have a site that services images located on AWS S3 via AWS Cloudfront.

我不想安装PageSpeed，我想利用PageSpeed提供的图像优化和延迟加载(页面外视图)优势.

I'm not looking to install PageSpeed and I want to take advantage of the image optimization and lazy loading (out of page view) that PageSpeed offers.

我的问题是:

我是否需要使用PageSpeed将图像从S3移到服务器上，以利用图像优化和延迟加载的优势.例如:图像需要位于PageSpeed的安装位置，还是在这种情况下可以位于S3的外部?

Do I need to move the images from S3 onto the Server with PageSpeed to take advantage of the image optimization and lazy loading. eg: to the images need to be local to where PageSpeed is installed or can they be external on S3 in this case?

我可以看到如何将pagespeed定向到文件系统中的加载文件(图像)，如下所示.

I can see how to direct pagespeed to loadfiles (images) from the file system as below.

pagespeed LoadFromFile http://static.example.com/ /var/www/static/;

答案是否定的，因为将图像放在本地并使用"LoadFromFile"会更快，但是可以使用远程存储库吗?

Would the answer to this be it would be faster to have the images local and use "LoadFromFile" but it's possible to use a remote repository?

谢谢 亚当

我现在可以看到以下内容:

I can now see the following:

pagespeed LoadFromFileMatch "^https?://example.com/~([^/]*)/static/"
                            "/var/www/static/\\1";

看来，这可能使PageSpeed可以检查本地资源，然后根据需要从远程HTTP位置获取.

It appears this might allow PageSpeed to check for local resources and then fetch from a remote HTTP location if required.

推荐答案

mod_pagespeed可以从任何地方优化图像.默认情况下，它仅优化与HTML相同的域中的图像，您可以使用以下方法授权mod_pagespeed来优化来自任何域的图像:

mod_pagespeed can optimize images from anywhere. By default, it optimizes images only from the same domain as the HTML, you can authorize mod_pagespeed to optimize images from any domain with:

pagespeed Domain www.example.com;

注意:这只会告诉mod_pagespeed重写该域上资源的URL.如果example.com上也未安装mod_pagespeed，这将失败！在这种情况下，您可以使用:

Note: This will just tell mod_pagespeed to rewrite the URLs for resources on that domain. If example.com does not have mod_pagespeed installed on it as well, this will fail! If that is the case, you can use:

pagespeed MapRewriteDomain modpagespeed.domain.com other.domain.com;

这将告诉mod_pagespeed更改提供重写资源的域，以便您可以实际提供重写版本.

This will tell mod_pagespeed to change the domain the rewritten resources are served from so that you can actually serve the rewritten versions.

有关更多信息，请参见 https://developers.google.com/speed/pagespeed/模块/域

For more information see https://developers.google.com/speed/pagespeed/module/domains

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