Ravi Sir's Cards › AWS
What it reads
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
What it reads
Query
Items for one partition key (optional sort range).
Scan
Potentially the whole table.
Key points
Cheap when keyed well.
Pay for items examined.
Example
List notes for userId=7.
Use when
Default for apps.
Tiny labs or rare jobs only.