Amazon SQS FAQs

Front

What are the benefits of Amazon SQS over homegrown or packaged message queuing systems?

Back

Amazon SQS provides advantages such as no administrative overhead, little configuration, massive scalability, and extremely high message durability.

Front

How is Amazon SQS different from Amazon Simple Notification Service (SNS)?

Back

Amazon SNS uses a push mechanism to send time-critical messages to multiple subscribers, while Amazon SQS is a message queue service that uses a polling model.

Front

What is the difference between Amazon SQS and Amazon MQ?

Back

Amazon MQ supports industry-standard APIs for existing applications, while Amazon SQS is recommended for new applications in the cloud.

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Does Amazon SQS provide message ordering?

Back

Yes, FIFO queues preserve the exact order of messages, while standard queues provide a loose-FIFO capability.

Front

What delivery guarantees does Amazon SQS provide?

Back

Standard queues provide at-least-once delivery, while FIFO queues provide exactly-once processing.

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How does Amazon SQS differ from Amazon Kinesis Streams?

Back

Amazon SQS is a reliable queue for storing messages, while Amazon Kinesis Streams allows real-time processing of streaming data.

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How does Amazon SQS handle messages that can't be processed?

Back

Amazon SQS uses dead-letter queues to isolate messages that can't be processed for later analysis.

Front

What is a visibility timeout in Amazon SQS?

Back

The visibility timeout is the period during which Amazon SQS prevents other consumers from receiving and processing a message.

Front

What is Amazon SQS long polling?

Back

Long polling retrieves messages from SQS queues without returning a response until a message arrives or the poll times out.

Front

What is the maximum message retention period in Amazon SQS?

Back

Messages can be retained for a period from 1 minute to 14 days, with a default of 4 days.