Specifications

DMS for RocketMQ is compatible with open-source RocketMQ 4.8.0 and 5.x. Their specifications are described as follows.

RocketMQ process messages, relying on the disk throughput. Ultra-high I/O and higher disks satisfy the performance baseline but high I/O ones may not.

DMS for RocketMQ 4.8.0

The specifications of a RocketMQ 4.8.0 instance are defined on seven 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 and ultra-high I/O types are available.
Storage space: storage capacity available for each broker
TPS per broker: TPS performance of each broker
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 flavors of DMS for RocketMQ 4.8.0.

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.

**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

DMS for RocketMQ 5.x Basic Edition

The specifications of a RocketMQ 5.x basic edition instance are defined on six dimensions:

ECS flavor: flavor of the ECS used by the instance
Disk type: defines the storage space. High I/O 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 list the flavors of DMS for RocketMQ 5.x basic 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).