How do conditional DynamoDB updates work with its possible consistency model?

Question

I read the DynamoDB documentation and found two interesting features:

• Serial matching reads
• Strongly consistent reading
• Conditional Updates

My question is: how do these three things interact with each other? Basically, I am wondering if conditional updates use strictly consistent reads to check state or do they ultimately use sequential reads? If it will be later, there is still a race condition, right?

Answer 1

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