服务器将与该商品相关的所有细节，比如价格、特征和图片等，发送给用户。
The server sends all details about that item such as its price, features, image, etc., to the user.
举例来说，你能通过规定上传图片的具体尺寸，而避免进行在服务器端的图像操作么？
For example, can you suggest that people upload images of a specific size instead of doing the image manipulation on the server side?
这种方法还适用于你需要从多个服务器取得许多不能被缓存的图片。
This trick can also be immensely effective when you include lots and lots of smaller images from several servers (like gravatars for example) as these are not likely to be cached.
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