Quotas and Limits

Last updated:2026-01-23 17:09:49

Quotas and Limits

Last updated: 2026-01-23 17:09:49

This document describes the metric and performance limits of TDMQ for RocketMQ clusters. To prevent exceptions, take note of these limits when you use the product.
5.x Clusters
4.x Clusters
Clusters
Limit Type
Limit
Cluster name length
3 to 64 characters.
Upper limit of cluster TPS
Different clusters are limited according to their specifications, and exceeding these limits will result in traffic throttling. TPS is calculated based on message type and message size. For the specific calculation standards, see 5.x Clusters.
Public network security policy
50 items.
Topic
Limit Type
Limit of Trial Edition Clusters
Limit of Basic Edition Clusters
Limit of Pro Edition Clusters
Limit of Platinum Edition Clusters
Maximum number of topics in a single cluster
50. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
100 to 999. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
300 to 999. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
1,000 to 10,000. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
Topic name length
3 to 100 characters.
3 to 100 characters.
3 to 100 characters.
3 to 100 characters.
Maximum number of producer clients for a single topic
1000
1000
1000
1000
Maximum number of consumer clients for a single topic
500
500
500
500
Group
Limit Type
Limit of Trial Edition Clusters
Limit of Basic Edition Clusters
Limit of Pro Edition Clusters
Limit of Platinum Edition Clusters
Maximum number of groups in a single cluster
500
1,000 to 2,000. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters documentation.
3,000 to 10,000. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters.
10,000 to 100,000. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters.
Group name length
3 to 64 characters.
3 to 64 characters.
3 to 64 characters.
3 to 64 characters.
Messages
Limit Type
Limit of Trial Edition Clusters
Limit of Basic Edition Clusters
Limit of Pro Edition Clusters
Limit of Platinum Edition Clusters
Maximum message retention time
1 to 3 days. The default value is 3 days. The upper limit is adjustable at the cluster level.
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1 to 7 days. The default value is 3 days. The upper limit is adjustable at the topic level.
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Maximum message delay
7 days
40 days. If you have special requirements, submit a ticket for consultation.﻿
40 days. If you have special requirements, submit a ticket for consultation.﻿
Customizable; up to 1 year.
Message size
4 MB
 4 MB
The maximum message size is 4 MB. If you have special requirements, submit a ticket for consultation.﻿
Customizable
Consumer offset reset
The default value is 3 days, same as the message retention time.
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Clusters
Limit Type
Limit of Virtual Clusters
Limit of Exclusive Clusters
Limit of General Clusters
Maximum number of clusters in a single region
10.
Not limited.
Not limited.
Cluster name length
3 to 64 characters.
3 to 64 characters.
3 to 64 characters.
Upper limit of cluster TPS
4000
Greater than 2,000. The specific quota is calculated based on different node specifications.
Greater than 8,000. The specific quota is calculated based on different TPS specifications.
Public network security policy
Not supported.
50 items.
50 items.
Namespaces
Limit Type
Limit of Virtual Clusters
Limit of Exclusive Clusters
Limit of General Clusters
Maximum number of namespaces in a single cluster
10.
10.
N/A
Namespace name length
3 to 32 characters.
3 to 32 characters.
N/A
Topic
Limit Type
Limit of Virtual Clusters
Limit of Exclusive Clusters
Limit of General Clusters
Maximum number of topics in a single cluster
150. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
200 to 500. The specific quota is calculated based on different cluster specifications. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
The default value is 400. The specific quota is calculated based on different cluster specifications. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
Topic name length
3 to 64 characters.
3 to 64 characters.
3 to 64 characters.
Maximum number of producers for a single topic
1000
1000
1000
Maximum number of consumers for a single topic
500
500
500
Group
Limit Type
Limit of Virtual Clusters
Limit of Exclusive Clusters
Limit of General Clusters
Maximum number of groups in a single cluster
1500
2,000 to 5,000. The specific quota is calculated based on different cluster specifications.
The default value is 4,000. The specific quota is calculated based on different cluster specifications.
Group name length
3 to 64 characters.
3 to 64 characters.
3 to 64 characters.
Messages
Limit Type
Limit of Virtual Clusters
Limit of Exclusive Clusters
Limit of General Clusters
Maximum message retention time
3 days.
The default value is 3 days. The upper limit is adjustable at the cluster level.
The default value is 3 days. The upper limit is adjustable at the cluster level.
Maximum message delay
40 days.
40 days. If you have special requirements, submit a ticket for consultation.
40 days. If you have special requirements, submit a ticket for consultation.
Message size
4 MB
The maximum message size is 4 MB. If you have special requirements, submit a ticket for consultation.
The maximum message size is 4 MB. If you have special requirements, submit a ticket for consultation.
Consumer offset reset
3 days.
The default value is 3 days, same as the message retention time.
The default value is 3 days, same as the message retention time.
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Limit Type	Limit
Cluster name length	3 to 64 characters.
Upper limit of cluster TPS	Different clusters are limited according to their specifications, and exceeding these limits will result in traffic throttling. TPS is calculated based on message type and message size. For the specific calculation standards, see 5.x Clusters.
Public network security policy	50 items.

Limit Type	Limit of Trial Edition Clusters	Limit of Basic Edition Clusters	Limit of Pro Edition Clusters	Limit of Platinum Edition Clusters
Maximum number of topics in a single cluster	50. The topics corresponding to dead letter queues and retry queues are not counted against the quota.	100 to 999. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.	300 to 999. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.	1,000 to 10,000. The specific quota is calculated based on different cluster specifications. The quota can be self-increased in the console. For more information, see 5.x Clusters. The topics corresponding to dead letter queues and retry queues are not counted against the quota.
Topic name length	3 to 100 characters.	3 to 100 characters.	3 to 100 characters.	3 to 100 characters.
Maximum number of producer clients for a single topic	1000	1000	1000	1000
Maximum number of consumer clients for a single topic	500	500	500	500

Limit Type	Limit of Virtual Clusters	Limit of Exclusive Clusters	Limit of General Clusters
Maximum number of clusters in a single region	10.	Not limited.	Not limited.
Cluster name length	3 to 64 characters.	3 to 64 characters.	3 to 64 characters.
Upper limit of cluster TPS	4000	Greater than 2,000. The specific quota is calculated based on different node specifications.	Greater than 8,000. The specific quota is calculated based on different TPS specifications.
Public network security policy	Not supported.	50 items.	50 items.

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Clusters

Topic

Group

Messages

Clusters

Namespaces

Topic

Group

Messages