RocketMQ Specifications

Learn about specifications supported by RocketMQ.

DMS for RocketMQ is compatible with open-source RocketMQ 4.8.0 and 5.x.

RocketMQ 4.8.0

RocketMQ 4.8.0 specifications are defined from the following dimensions:

ECS flavor: flavor of the ECS used by the instance
Number of brokers: scale of the instance
Disk type: defines the storage space. High I/O, General Purpose SSD, Extreme SSD, and ultra-high I/O types are available.
Storage space: storage capacity available for each broker
TPS per broker: TPS performance of each broker (assuming 1 KB messages as baseline)
Max. topics per broker: number of topics allowed for each broker
Max. consumer groups per broker: number of consumer groups allowed for each broker

Table 1 lists the RocketMQ 4.8.0 specifications.

TPS (Transaction per second) indicates the total number of produced and consumed messages per second, that is, the total throughput of message production and consumption per second for a flavor (assuming 1 KB messages).

**Table 1** Instance specifications (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	300–60,000	15,000	2,000	2,000
rocketmq.4u8g.cluster	1–10	300–600,000	20,000	4,000	4,000
rocketmq.8u16g.cluster	1–10	300–900,000	25,000	8,000	8,000
rocketmq.12u24g.cluster	1–10	300–900,000	28,000	12,000	12,000
rocketmq.16u32g.cluster	1–10	300–900,000	30,000	16,000	16,000

RocketMQ 5.x Basic Edition

RocketMQ 5.x basic edition specifications are defined from the following dimensions:

ECS flavor: flavor of the ECS used by the instance
Disk type: defines the storage space. High I/O, General Purpose SSD, Extreme SSD, and ultra-high I/O types are available.
Storage space: storage capacity the instance can use
TPS: TPS performance of the instance
Max. topics: number of topics allowed for the instance
Max. consumer groups: number of consumer groups allowed for the instance

Table 2 and Table 3 describe the RocketMQ 5.x basic edition specifications. In the following tables, TPS is calculated using 4 KB normal messages. The TPS of sending scheduled, delayed, or transactional messages is that of sending normal messages multiplied by 5. For receiving these messages, do not do the multiplication. For example, the TPS of sending a normal message per second is 1, and TPS of sending a transactional message per second is 5 (1 x 5).

**Table 2** Instance specifications (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 specifications (RocketMQ 5.x basic edition cluster)
Flavor	Storage Space (GB)	TPS	Max. Topics	Max. Consumer Groups
rocketmq.b2.large.4	200–60,000	2,000	100	1000
rocketmq.b2.large.8	200–60,000	4,000	100	1000
rocketmq.b2.large.12	200–60,000	6,000	100	1000

DMS for RocketMQ 5.x Professional Edition

The specifications of a RocketMQ 5.x professional edition instance are defined on seven dimensions:

ECS flavor: flavor of the ECS used by the instance
Disk type: defines the storage space. High I/O, General Purpose SSD, Extreme SSD, and ultra-high I/O types are available.
Storage space: storage capacity the instance can use
TPS: TPS performance of the instance
Flexible TPS: flexible TPS of the instance
Max. topics: number of topics allowed for the instance
Max. consumer groups: number of consumer groups allowed for the instance

Table 4 and Table 5 list the flavors of DMS for RocketMQ 5.x professional edition. In the following tables, TPS is calculated using 4 KB normal messages. The TPS of sending scheduled, delayed, or transactional messages is that of sending normal messages multiplied by 5. For receiving these messages, do not do the multiplication. For example, the TPS of sending a normal message per second is 1, and TPS of sending a transactional message per second is 5 (1 x 5).

**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