What is the consistency model of Amazon DynamoDB?

When reading data from Amazon DynamoDB, users can specify whether they want the read to be eventually consistent or strongly consistent:

Eventually Consistent Reads (Default) – the eventual consistency option maximizes your read throughput. However, an eventually consistent read might not reflect the results of a recently completed write. Consistency across all copies of data is usually reached within a second. Repeating a read after a short time should return the updated data.

Strongly Consistent Reads — in addition to eventual consistency, Amazon DynamoDB also gives you the flexibility and control to request a strongly consistent read if your application, or an element of your application, requires it. A strongly consistent read returns a result that reflects all writes that received a successful response prior to the read.

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