AWS re:Invent 2020 announcement: S3 Strong Read-After-Write Consistency

Andy Jassy presented a bunch of new services and features during his opening keynote for the 2020 AWS re:Invent, but one that caught my attention is the one regarding S3 Strong Read-After-Write consistency. So let’s take a bit of a deeper dive into the new S3 feature.

What is Amazon S3?

What’s the news?

In the past, between a PUT API call that stored or modified data or a DELETE API call that delete data, there was a small time window in which the data or the modification was not yet visible to any LIST or GET requests.

Now, immediately after the correct modification of an existing object or the writing of a new object, it is possible to receive or list the last existing version of the object without changes to performance or availability or global dependencies.

Why this is so important?

Last but not least, the service is available at no additional cost in all regions.

You can find more information in the launch video

or in the Jeff Barr blog
https://aws.amazon.com/blogs/aws/amazon-s3-update-strong-read-after-write-consistency/

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