AWS S3相同圖像，不同尺寸

Question

當用戶將圖像上傳到我的網站時，我將圖像的多個副本以不同的尺寸保存到S3。是否可以保存圖像的一個副本並通過URL變量訪問不同的大小？

我寧願是這樣的：

https://s3-us-west-2.amazonaws.com/img.jpg?size=small 
https://s3-us-west-2.amazonaws.com/img.jpg?size=medium 
https://s3-us-west-2.amazonaws.com/img.jpg?size=large 

與此相反：

https://s3-us-west-2.amazonaws.com/img1.jpg 
https://s3-us-west-2.amazonaws.com/img2.jpg 
https://s3-us-west-2.amazonaws.com/img3.jpg 

我不想不必要下載大量圖片。

Answer 1

這不可能與S3（因爲S3不會計算其他格式，他們只會爲您上傳的文件）。但它可能與https://www.imgix.com，它幾乎所描述的。

Answer 2

不，您不能使用查詢參數訪問S3上的不同對象（文件）。

就像你自己建議的那樣，你必須想出一個命名模式。您的建議是：

https://s3-us-west-2.amazonaws.com/bucketname/<imagename><size>.<ext> 
- Example: - 
https://s3-us-west-2.amazonaws.com/bucketname/img1.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img2.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img3.jpg 

如果你不喜歡這樣，一種替代方案：

https://s3-us-west-2.amazonaws.com/bucketname/<imagename>/<size>.<ext> 

- Example: - 
https://s3-us-west-2.amazonaws.com/bucketname/img/1.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img/2.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img/3.jpg 
- or named sizes: - 
https://s3-us-west-2.amazonaws.com/bucketname/img/small.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img/medium.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img/large.jpg 

或者：

https://s3-us-west-2.amazonaws.com/bucketname/<imagename>-<size>.<ext> 
- Example: - 
https://s3-us-west-2.amazonaws.com/bucketname/img-1.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img-2.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img-3.jpg 
- or named sizes: - 
https://s3-us-west-2.amazonaws.com/bucketname/img-small.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img-medium.jpg 
https://s3-us-west-2.amazonaws.com/bucketname/img-large.jpg 

或者，如果您願意手動設置的內容類型每個上傳對象，甚至：

https://s3-us-west-2.amazonaws.com/bucketname/<imagename>.<ext>/<size> 
- Example with named sizes: - 
https://s3-us-west-2.amazonaws.com/bucketname/img.jpg/small 
https://s3-us-west-2.amazonaws.com/bucketname/img.jpg/medium 
https://s3-us-west-2.amazonaws.com/bucketname/img.jpg/large 

如何在S3存儲桶中命名圖像對象並不重要，但是您的Web應用程序必須知道如何將圖像URL放在一起才能鏈接到所需的格式。