A map of attributes with their corresponding values.
The following lists the names, descriptions, and values of the special request parameters that the ‘CreateQueue` action uses:
-
‘DelaySeconds` – The length of time, in seconds, for which the delivery of all messages in the queue is delayed. Valid values: An integer from 0 to 900 seconds (15 minutes). Default: 0.
-
‘MaximumMessageSize` – The limit of how many bytes a message can contain before Amazon SQS rejects it. Valid values: An integer from 1,024 bytes (1 KiB) to 262,144 bytes (256 KiB). Default: 262,144 (256 KiB).
-
‘MessageRetentionPeriod` – The length of time, in seconds, for which Amazon SQS retains a message. Valid values: An integer from 60 seconds (1 minute) to 1,209,600 seconds (14 days). Default: 345,600 (4 days).
-
‘Policy` – The queue’s policy. A valid AWS policy. For more information about policy structure, see [Overview of AWS IAM Policies] in the *Amazon IAM User Guide*.
-
‘ReceiveMessageWaitTimeSeconds` – The length of time, in seconds, for which a ` ReceiveMessage ` action waits for a message to arrive. Valid values: An integer from 0 to 20 (seconds). Default: 0.
-
‘RedrivePolicy` – The string that includes the parameters for the dead-letter queue functionality of the source queue as a JSON object. For more information about the redrive policy and dead-letter queues, see [Using Amazon SQS Dead-Letter Queues] in the *Amazon Simple Queue Service Developer Guide*.
-
‘deadLetterTargetArn` – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS moves messages after the value of `maxReceiveCount` is exceeded.
-
‘maxReceiveCount` – The number of times a message is delivered to the source queue before being moved to the dead-letter queue. When the `ReceiveCount` for a message exceeds the `maxReceiveCount` for a queue, Amazon SQS moves the message to the dead-letter-queue.
<note markdown=“1”> The dead-letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead-letter queue of a standard queue must also be a standard queue.
</note>
-
‘VisibilityTimeout` – The visibility timeout for the queue, in seconds. Valid values: An integer from 0 to 43,200 (12 hours). Default: 30. For more information about the visibility timeout, see
- Visibility Timeout][3
-
in the *Amazon Simple Queue Service
Developer Guide*.
The following attributes apply only to [server-side-encryption]:
-
‘KmsMasterKeyId` – The ID of an AWS-managed customer master key (CMK) for Amazon SQS or a custom CMK. For more information, see [Key Terms]. While the alias of the AWS-managed CMK for Amazon SQS is always `alias/aws/sqs`, the alias of a custom CMK can, for example, be `alias/MyAlias `. For more examples, see [KeyId] in the *AWS Key Management Service API Reference*.
-
‘KmsDataKeyReusePeriodSeconds` – The length of time, in seconds, for which Amazon SQS can reuse a [data key] to encrypt or decrypt messages before calling AWS KMS again. An integer representing seconds, between 60 seconds (1 minute) and 86,400 seconds (24 hours). Default: 300 (5 minutes). A shorter time period provides better security but results in more calls to KMS which might incur charges after Free Tier. For more information, see [How Does the Data Key Reuse Period Work?].
The following attributes apply only to [FIFO (first-in-first-out) queues]:
-
‘FifoQueue` – Designates a queue as FIFO. Valid values are `true` and `false`. If you don’t specify the ‘FifoQueue` attribute, Amazon SQS creates a standard queue. You can provide this attribute only during queue creation. You can’t change it for an existing queue. When you set this attribute, you must also provide the ‘MessageGroupId` for your messages explicitly.
For more information, see [FIFO Queue Logic] in the *Amazon Simple Queue Service Developer Guide*.
-
‘ContentBasedDeduplication` – Enables content-based deduplication. Valid values are `true` and `false`. For more information, see
- Exactly-Once Processing][11
-
in the *Amazon Simple Queue Service
Developer Guide*. Note the following:
-
Every message must have a unique ‘MessageDeduplicationId`.
-
You may provide a ‘MessageDeduplicationId` explicitly.
-
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).
-
If you don’t provide a ‘MessageDeduplicationId` and the queue doesn’t have ‘ContentBasedDeduplication` set, the action fails with an error.
-
If the queue has ‘ContentBasedDeduplication` set, your `MessageDeduplicationId` overrides the generated one.
-
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 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.
**Preview: High throughput for FIFO queues**
**High throughput for Amazon SQS FIFO queues is in preview release and is subject to change.** This feature provides a high number of transactions per second (TPS) for messages in FIFO queues. For information on throughput quotas, see [Quotas related to messages] in the *Amazon Simple Queue Service Developer Guide*.
This preview includes two new attributes:
-
‘DeduplicationScope` – Specifies whether message deduplication occurs at the message group or queue level. Valid values are `messageGroup` and `queue`.
-
‘FifoThroughputLimit` – Specifies whether the FIFO queue throughput quota applies to the entire queue or per message group. Valid values are `perQueue` and `perMessageGroupId`. The `perMessageGroupId` value is allowed only when the value for `DeduplicationScope` is `messageGroup`.
To enable high throughput for FIFO queues, do the following:
If you set these attributes to anything other than the values shown for enabling high throughput, standard throughput is in effect and deduplication occurs as specified.
This preview is available in the following AWS Regions:
-
US East (Ohio); us-east-2
-
US East (N. Virginia); us-east-1
-
US West (Oregon); us-west-2
-
Europe (Ireland); eu-west-1
For more information about high throughput for FIFO queues, see
- Preview: High throughput for FIFO queues][13
-
in the *Amazon Simple
Queue Service Developer Guide*.
[1]: docs.aws.amazon.com/IAM/latest/UserGuide/PoliciesOverview.html [2]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html [3]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html [4]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-server-side-encryption.html [5]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-server-side-encryption.html#sqs-sse-key-terms [6]: docs.aws.amazon.com/kms/latest/APIReference/API_DescribeKey.html#API_DescribeKey_RequestParameters [7]: docs.aws.amazon.com/kms/latest/developerguide/concepts.html#data-keys [8]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-server-side-encryption.html#sqs-how-does-the-data-key-reuse-period-work [9]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html [10]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html#FIFO-queues-understanding-logic [11]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html#FIFO-queues-exactly-once-processing [12]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/quotas-messages.html [13]: docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/high-throughput-fifo.html