S3图片缩略图是否需要第三方软件。
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S3是否能够实现自动把较大的图片转换成缩略图供用户查看，是必须借助第三方图片处理软件吗
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用lambda就能做到：https://aws.amazon.com/cn/blogs/compute/resize-images-on-the-fly-with-amazon-s3-aws-lambda-and-amazon-api-gateway/ 如果您用了cloudfront做分发，还可以使用lambda@edge以将缩略图放到缓存中增加分发效果 https://aws.amazon.com/cn/blogs/china/use-cloudfront-lambdaedge-for-transaction-processing/ 以上两个方案都在中国区有solution https://www.amazonaws.cn/solutions/serverless-image-handler/ https://www.amazonaws.cn/solutions/lambda-edge-collection-for-cloudfront/
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