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by ignoramous 2033 days ago
I believe someone allegedly from AWS said DynamoDB was written on top of MySQL (on top of InnoDB, really) [0] which would be similar to what Uber and Pinterest did as well. [1]

[0] https://news.ycombinator.com/item?id=18426096

[1] https://news.ycombinator.com/item?id=12605026