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Message Queue for RocketMQ

Overview

Limits

Limits

There are certain limits on metrics and performance for Message Queue for RocketMQ. To avoid unexpected issues, please ensure your usage does not exceed these limits.

Limit	Value	Description
Number of instances	5	The maximum number of Message Queue for RocketMQ instances within a single region. You can apply to increase the maximum number of instances (InstanceNum) per region through the Quota Center. The maximum adjustable limit is 10 instances.
Total storage capacity	10 TiB	The total storage capacity of all Message Queue for RocketMQ instances within a single region. You can apply to increase the total storage capacity (StorageSum) per region through the Quota Center. The maximum adjustable limit is 30 TiB.
Total TPS	600,000	The total TPS of all Message Queue for RocketMQ instances within a single region. You can apply to increase the total TPS (TpsSum) per region through the Quota Center. The maximum adjustable limit is 1,200,000.
Message size	Normal and ordered messages: 4 MB Transactional and scheduled/delayed messages: 64 KB	The maximum size that Message Queue for RocketMQ can accept for various message types. Messages that exceed these limits cannot be sent successfully. tip When messages are sent in batches, the total size of all the messages in the batch is used to calculate the size of each message. The message properties for any message type must not exceed 16 KB.
Maximum message retention period	72 hours	The maximum amount of time that messages are retained on the server. This value can be configured from 1 to 72 hours. The default value is 72 hours (three days). Messages that exceed the retention period will be deleted.
Maximum dead-letter message retention period	72 hours	The maximum amount of time that dead-letter messages are retained on the server. This value can be configured from 1 to 72 hours. The default value is 72 hours (three days). Messages that exceed the retention period will be deleted.
Maximum consumer offset retention period	72 hours	The maximum amount of time that consumer offsets are retained. It determines the earliest point in time at which you can reset a consumer offset. This value can be configured from 1 to 72 hours. The default value is 72 hours (three days).
Delay duration	The smaller of 3 days or 3 times the message retention period	Delayed messages support custom millisecond-level delay durations.
Logging in to the machine hosting Message Queue for RocketMQ	Not supported	/
Changing the region of an instance	Not supported	/

Last updated: 2026.09.23 10:34:37