Multiple ChoiceIntermediate 45s
Sync vs async architecture
A checkout flow must return a payment decision to the customer within 2 seconds and also trigger fulfillment, email, and analytics. What architecture best balances this?
Options
- 1Fully synchronous chain covering payment, fulfillment, email and analytics
- 2Synchronous call for the payment decision, asynchronous events for downstream side effects
- 3Fully asynchronous fire-and-forget for everything including payment
- 4Batch everything nightly and reply to the user the next day
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