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A comment on The DynamoDB Book: Data Modeling with NoSQL and DynamoDB. Parent comment

Re:The DynamoDB Book: Data Modeling with NoSQL and DynamoDB by dgemm on Friday May 15, 2020 @10:20PM (#23199908)
If you think of them as incredibly similar then you are likely not making very good use of them.

For example consistency is not "roughly the same" with DynamoDB supporting strongly consistent and atomic operations, and atomic update operations.

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Re:The DynamoDB Book: Data Modeling with NoSQL and DynamoDB by DVassallo on Friday May 15, 2020 @11:52PM (#23200346)
S3 is also immediately consistent unless you’re updating an existing object or listing objects.

I was one of the top users by volume of both products when I worked at AWS.

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