Help Center/ Distributed Message Service for RocketMQ/ FAQs/ Topic FAQs/ How Many Topics Are Supported?
Updated on 2026-01-07 GMT+08:00
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How Many Topics Are Supported?

As shown in Table 1, Table 2, Table 3, Table 4, and Table 5, the number of topics supported varies depending on the instance flavor.

Table 1 Instance flavors (DMS for RocketMQ 4.8.0)

Flavor

Brokers

Storage Space (GB per Broker)

TPS per Broker

Max. Topics per Broker

Max. Consumer Groups per Broker

rocketmq.4u8g.cluster.small

1–10

300–30,000

15,000

2,000

2,000

rocketmq.4u8g.cluster

1–10

300–60,000

20,000

4,000

4,000

rocketmq.8u16g.cluster

1–10

300–90,000

25,000

8,000

8,000

rocketmq.12u24g.cluster

1–10

300–90,000

28,000

12,000

12,000

rocketmq.16u32g.cluster

1–10

300–90,000

30,000

16,000

16,000
Table 2 Instance flavors (DMS for RocketMQ 5.x basic edition single-node)

Flavor

Storage Space (GB)

TPS

Max. Topics

Max. Consumer Groups

rocketmq.b1.large.1

100–30,000

500

50

500
Table 3 Instance flavors (DMS for RocketMQ 5.x basic edition cluster)

Flavor

Storage Space (GB)

TPS

Max. Topics

Max. Consumer Groups

Max. Connections

rocketmq.b2.large.4

200–60,000

2,000

100

1000

4,000

rocketmq.b2.large.8

200–60,000

4,000

100

1000

4,000

rocketmq.b2.large.12

200–60,000

6,000

100

1000

6,000
Table 4 Instance flavors (DMS for RocketMQ 5.x professional edition single-node)

Flavor Name

Storage Space (GB)

TPS

Max. Topics

Consumer Groups

rocketmq.p1.large.1

100–30,000

500

200

500
Table 5 Instance flavors (DMS for RocketMQ 5.x professional edition cluster)

Flavor Name

Storage Space (GB)

TPS

Flexible TPS

Topics

Consumer Groups

rocketmq.p2.large.8

200–60,000

4,000

2,000

400

1,500

rocketmq.p2.large.12

200–60,000

6,000

3,000

400

1,500

rocketmq.p2.large.20

200–60,000

10,000

5,000

800

1,500

rocketmq.p2.large.40

400–120,000

20,000

10,000

800

1,500

rocketmq.p2.large.100

400–120,000

50,000

25,000

1000

2,000

rocketmq.p2.large.150

400–120,000

75,000

37,500

1000

2,000

rocketmq.p2.large.200

800–240,000

100,000

50,000

1,500

4,000

rocketmq.p2.large.300

800–240,000

150,000

50,000

1,500

4,000
Parent topic: Topic FAQs