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Use Limits
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Last updated: 2025-07-15 17:42:40
Use Limits
Last updated: 2025-07-15 17:42:40
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This document lists the limits of certain metrics and performance in TDMQ for RocketMQ. Be careful not to exceed the limits during use so as to avoid exceptions.
5.x Cluster
4.x Cluster

Cluster

Limit Type
Limit
Cluster name length
Enter 3 to 64 characters.
Cluster TPS cap
Different clusters are limited by specification, and exceeding the limit will result in rate-limiting. TPS is converted based on message type and message size. For conversion specifications, see Billing Instructions.
public network security policy
50

Topic

Limit Type
Trial Version Cluster Restrictions
Basic Version Cluster Restrictions
Professional Edition Cluster Limit
Platinum Edition Cluster Limit
Single-cluster topic cap
The corresponding Topic for DLQ and retry queue does not occupy quota.
100-999. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions. The corresponding Topic for DLQ and retry queue does not occupy quota.
300-999. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions. The corresponding Topic for DLQ and retry queue does not occupy quota.
1000-10000. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions. The corresponding Topic for DLQ and retry queue does not occupy quota.
Topic name length
Enter 3 to 100 characters.
Enter 3 to 100 characters.
Enter 3 to 100 characters.
Enter 3 to 100 characters.
Single-topic producer limit
1000
1000
1000
1000
Single-topic consumer limit
500
500
500
500

Group

Limit Type
Trial Version Cluster Restrictions
Basic Version Cluster Restrictions
Professional Edition Cluster Limit
Platinum Edition Cluster Limit
Single-cluster group cap
500
1000-2000. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions.
3000-10000. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions.
10000-100000. The limit can be self-service increased in the console based on different cluster specifications. For details, see Billing Instructions.
Group name length
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Enter 3 to 64 characters.

Message

Limit Type
Trial Version Cluster Restrictions
Basic Version Cluster Restrictions
Professional Edition Cluster Limit
Platinum Edition Cluster Limit
Maximum message retention time
1-3 days, defaults to 3 days, can be adjusted at the cluster level
1-7 days, defaults to 3 days, can be adjusted at the Topic level
Maximum message delay
7 days
40 days. For special requirements, submit a ticket.
40 days. For special requirements, submit a ticket.
Customizable, up to 1 year
Message Size
4 MB
4 MB
Maximum 4 MB. For special requirements, submit a ticket.
customizable
Consumer offset reset
Default 3 days, same as message retention time

Cluster

Limit Type
Virtual Cluster Restrictions
Dedicated Cluster Restrictions
Common Cluster Restrictions
Single-region cluster cap
10
No limit
No limit
Cluster name length
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Cluster TPS cap
4000
Over 2000, calculated by node specification
Over 8000, calculated by TPS specification
public network security policy
Unsupported
50
50

Namespace

Limit Type
Virtual Cluster Restrictions
Dedicated Cluster Restrictions
Common Cluster Restrictions
Single-cluster namespace cap
10
10
Not involved.
Namespace name length
Enter 3 to 32 characters.
Enter 3 to 32 characters.
Not involved.

Topic

Limit Type
Virtual Cluster Restrictions
Dedicated Cluster Restrictions
Common Cluster Restrictions
Single-cluster topic cap
The corresponding Topic for DLQ and retry queue does not occupy quota.
200-500, calculated by cluster specification. The corresponding Topic for DLQ and retry queue does not occupy quota.
400 by default, calculated by cluster specification. The corresponding Topic for DLQ and retry queue does not occupy quota.
Topic name length
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Single-topic producer limit
1000
1000
1000
Single-topic consumer limit
500
500
500

Group

Limit Type
Virtual Cluster Restrictions
Dedicated Cluster Restrictions
Common Cluster Restrictions
Single-cluster group cap
1500
2000-5000, calculated by cluster specification
Defaults to 4000, calculated by cluster specification
Group name length
Enter 3 to 64 characters.
Enter 3 to 64 characters.
Enter 3 to 64 characters.

Message

Limit Type
Virtual Cluster Restrictions
Dedicated Cluster Restrictions
Common Cluster Restrictions
Maximum message retention time
3 days
Defaults to 3 days, adjustable at the cluster level
Defaults to 3 days, supports cluster-level adjustment
Maximum message delay
40 days
40 days. For special requirements, submit a ticket.
40 days. For special requirements, submit a ticket.
Message Size
4 MB
Maximum 4 MB. For special requirements, submit a ticket.
Maximum 4 MB. For special requirements, submit a ticket.
Consumer offset reset
3 days
Default 3 days, same as message retention time
Default 3 days, same as message retention time

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