11/19/2023 0 Comments Aws sqs queue name limits![]() In this scenario, multiple readers can process the queue, but the session data of each user is processed in a FIFO fashion. To interleave multiple ordered streams within a single queue, use MessageGroupId values (for example, session data for multiple users). Messages that belong to the same message group are processed in a FIFO manner (however, messages in different message groups might be processed out of order). The tag that specifies that a message belongs to a specific message group. MessageDeduplicationId can contain alphanumeric characters ( a-z, A-Z, 0-9) and punctuation ( parameter applies only to FIFO (first-in-first-out) queues. The length of MessageDeduplicationId is 128 characters. If a message is sent successfully but the acknowledgement is lost and the message is resent with the same MessageDeduplicationId after the deduplication interval, Amazon SQS can't detect duplicate messages.Īmazon SQS continues to keep track of the message deduplication ID even after the message is received and deleted. The MessageDeduplicationId is available to the recipient of the message (this can be useful for troubleshooting delivery issues). If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered. When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered. If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one. If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error. If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message). You may provide a MessageDeduplicationId explicitly.
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