Ravi Sir's Cards › AWS
DynamoDB put / get
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Why do we need it?
Apps read and write single items all day.
What is it?
Items use type letters: S string, N number.
{"cust":{"S":"ravi"}}
How to do it
put-item, get-item by full key, update-item, delete-item.
--update-expression "SET #s = :p"
Example
Use --condition-expression to avoid overwrites.