Is it possible to change headers on an S3 object without downloading the entire object?

Question

I\'ve uploaded a bunch of images to Amazon S3, and now want to add a Cache-Control header to them.

Can the header be updated without downloading the entire image? I

Answer 1

This is out of beta and is available by doing a put command and copying the object as documented here. It is also available in their SDK's. For example with C#:

var s3Client = new AmazonS3Client("publicKey", "privateKey");
var copyRequest = new CopyObjectRequest()
                  .WithDirective(S3MetadataDirective.REPLACE)
                  .WithSourceBucket("bucketName")
                  .WithSourceKey("fileName")
                  .WithDestinationBucket("bucketName")
                  .WithDestinationKey("fileName)
                  .WithMetaData(new NameValueCollection { { "x-amz-meta-yourKey", "your-value }, { "x-amz-your-otherKey", "your-value" } });
var copyResponse = s3Client.CopyObject(copyRequest);