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Amazon S3 just grew "append"! It's only available for the more expensive, lower latency S3 Express One Zone bucket class but you can now append data to an object up to 10,000 times - previously you could only atomically replace a whole object with an updated version simonwillison.net/2024/Nov/22/...

simonwillison.netAmazon S3 Express One Zone now supports the ability to append data to an objectThis is a first for Amazon S3: it is now possible to append data to an existing object in a bucket, where previously the only supported operation was to atomically …

Very cool, especially for transcoding. It seems you can also read the file as it is being written? I'm very curious how object integrity is maintained as it gets appended to.

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