AWS - SNS and SQS
You want to ensure that messages with the same order ID are processed in order and only once. Which SQS queue configuration should you use?
You want to ensure that messages with the same order ID are processed in order and only once. Which SQS queue configuration should you use?
hard📝 Architecture Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify Ordering and Exactly-Once Requirements
FIFO queues guarantee exactly-once processing and ordering within MessageGroupId groups.Step 2: Apply MessageGroupId for Order ID
Setting MessageGroupId to order ID ensures messages with same ID are processed in order.Final Answer:
Create a FIFO queue and use MessageGroupId set to the order ID -> Option BQuick Check:
Ordering + exactly-once = FIFO + MessageGroupId [OK]
Quick Trick: Use FIFO queue with MessageGroupId for ordered processing [OK]
Common Mistakes:
- Using Standard queue for ordering
- Not setting MessageGroupId in FIFO queue
- Confusing dead-letter queue with ordering
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