AWSSQSSetQueueAttributesRequest Class Reference
|Inherits from||AWSRequest : AWSModel : AWSMTLModel|
A map of attributes to set.
The following lists the names, descriptions, and values of the special request parameters that the
SetQueueAttributes action uses:
DelaySeconds- The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).
MaximumMessageSize- The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).
MessageRetentionPeriod- The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.
RedrivePolicy- The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.
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.
VisibilityTimeout- The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.
The following attribute applies only to FIFO (first-in-first-out) queues:
ContentBasedDeduplication- Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.
Every message must have a unique
You may provide a
If you aren't able to provide a
MessageDeduplicationIdand you enable
ContentBasedDeduplicationfor your queue, Amazon SQS uses a SHA-256 hash to generate the
MessageDeduplicationIdusing the body of the message (but not the attributes of the message).
If you don't provide a
MessageDeduplicationIdand the queue doesn't have
ContentBasedDeduplicationset, the action fails with an error.
If the queue has
MessageDeduplicationIdoverrides the generated one.
ContentBasedDeduplicationis in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.
You can also use
ContentBasedDeduplicationfor messages with identical content to be treated as duplicates.
If you send one message with
ContentBasedDeduplicationenabled and then another message with a
MessageDeduplicationIdthat 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.
Any other valid special request parameters that are specified (such as
QueueArn) will be ignored.
@property (nonatomic, strong) NSDictionary<NSString*NSString*> *attributes
The URL of the Amazon SQS queue to take action on.
Queue URLs are case-sensitive.
@property (nonatomic, strong) NSString *queueUrl