AWS - SNS and SQS
A system needs to process messages in order and avoid duplicates. Which AWS messaging service and feature combination is best?
A system needs to process messages in order and avoid duplicates. Which AWS messaging service and feature combination is best?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Identify ordering and deduplication needs
FIFO queues guarantee order and deduplication features prevent duplicates.Step 2: Evaluate options
Amazon SQS FIFO queues with deduplication enabled correctly matches these requirements with SQS FIFO and deduplication.Final Answer:
Amazon SQS FIFO queues with deduplication enabled -> Option AQuick Check:
Ordered, duplicate-free processing = SQS FIFO + deduplication [OK]
Quick Trick: Use SQS FIFO for order and deduplication [OK]
Common Mistakes:
- Choosing standard queues without order guarantees
- Assuming SNS handles ordering
- Using EC2 and S3 for messaging
Master "SNS and SQS" in AWS
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