Ravi Sir's Cards › AWS
Fan-out shape
This revision card explains Fan-out shape. A for-loop of sync invokes couples every consumer to the producer. It describes publish once (SNS/EventBridge); consumers scale independently. The how-to section notes topic , then subscriptions , then per-consumer SQS , then Lambda. An example on the card is fatima Noor fans invoice + inventory + analytics from one event.
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What this card says
Why do we need it?
A for-loop of sync invokes couples every consumer to the producer.
What is it?
Publish once (SNS/EventBridge); consumers scale independently.
SNS
How to do it
Topic → subscriptions → per-consumer SQS → Lambda.
Example
Fatima Noor fans invoice + inventory + analytics from one event.