Quotas related to messages

High throughput for Amazon SQS FIFO queues is in preview release and is subject to change. For more information, see Preview: High throughput for FIFO queues.

The following table lists quotas related to messages.

Quota	Description
Batched message ID	A batched message ID can have up to 80 characters. The following characters are accepted: alphanumeric characters, hyphens (-), and underscores (_).
Message attributes	A message can contain up to 10 metadata attributes.
Message batch	A single message batch request can include a maximum of 10 messages. For more information, see Configuring AmazonSQSBufferedAsyncClient in the Amazon SQS batch actions section.
Message content	A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed: #x9 | #xA | #xD | #x20 to #xD7FF | #xE000 to #xFFFD | #x10000 to #x10FFFF Any characters not included in this list are rejected. For more information, see the W3C specification for characters.
Message group ID	Consume messages from the backlog to avoid building up a large backlog of messages with the same message group ID.
Message retention	By default, a message is retained for 4 days. The minimum is 60 seconds (1 minute). The maximum is 1,209,600 seconds (14 days).
Message throughput	Standard queues support a nearly unlimited number of API calls per second, per API action (SendMessage, ReceiveMessage, or DeleteMessage).
	FIFO queues If you use batching, FIFO queues support up to 3,000 transactions per second, per API method (SendMessageBatch, ReceiveMessage, or DeleteMessageBatch). The 3000 transactions represent 300 API calls, each with a batch of 10 messages. To request a quota increase, submit a support request. Without batching, FIFO queues support up to 300 API calls per second, per API method (SendMessage, ReceiveMessage, or DeleteMessage). The high throughput preview provides up to 3,000 transactions per second (TPS) for messages in FIFO queues in supported AWS Regions. For more information, see Preview: High throughput for FIFO queues.
Message timer	The default (minimum) delay for a message is 0 seconds. The maximum is 15 minutes.
Message size	The minimum message size is 1 byte (1 character). The maximum is 262,144 bytes (256 KB). To send messages larger than 256 KB, you can use the Amazon SQS Extended Client Library for Java. This library allows you to send an Amazon SQS message that contains a reference to a message payload in Amazon S3. The maximum payload size is 2 GB.
Message visibility timeout	The default visibility timeout for a message is 30 seconds. The minimum is 0 seconds. The maximum is 12 hours.
Policy information	The maximum quota is 8,192 bytes, 20 statements, 50 principals, or 10 conditions. For more information, see Quotas related to policies.