Ravi Sir's Cards › AWS
Access patterns first
This revision card explains Access patterns first. It starts from the need that keys invented before workloads cause Scans and hot partitions. It describes list every read/write screen , then shape Query , then then PK/SK and optional GSI. The how-to section notes paper workshop , then sample item JSON , then peer review , then console. An example on the card is aisha Khan (Dubai retail) refuses new GSIs until access patterns are written.
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What this card says
Why do we need it?
Keys invented before workloads cause Scans and hot partitions.
What is it?
List every read/write screen → shape Query → then PK/SK and optional GSI.
access pattern
How to do it
Paper workshop → sample item JSON → peer review → console.
Example
Aisha Khan (Dubai retail) refuses new GSIs until access patterns are written.