Help Center/ Distributed Message Service for RocketMQ/ API Reference/ APIs V2 (Recommended)/ Other APIs/ Querying vCPUs of a RocketMQ Flavor
Updated on 2025-12-18 GMT+08:00
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Querying vCPUs of a RocketMQ Flavor

Function

This API is used to query the number of cores of a RocketMQ flavor.

Calling Method

For details, see Calling APIs.

URI

GET /v2/rocketmq/products/cores

Table 1 Query Parameters

Parameter

Mandatory

Type

Description

instance_id

No

String

Definition

Instance ID. You can call the API for querying all instances to obtain the instance ID. The instance ID is in the response body. The instance ID is optional. total_extend_storage_space is returned only when the instance ID is entered in the response body.

Constraints

N/A

Range

N/A

Default Value

N/A

product_id

Yes

String

Definition

Product ID.

Constraints

N/A

Range

  • c6.4u8g.cluster.small: Max. 2,000 topics and 2,000 consumer groups per broker

  • c6.4u8g.cluster: Max. 4,000 topics and 4,000 consumer groups per broker

  • c6.8u16g.cluster: Max. 8,000 topics and 8,000 consumer groups per broker

  • c6.12u24g.cluster: Max. 12,000 topics and 12,000 consumer groups per broker

  • c6.16u32g.cluster: Max. 16,000 topics and 16,000 consumer groups per broker

  • rocketmq.b1.large.1: RocketMQ 5.x basic edition single-node flavor, instance TPS 500

  • rocketmq.b2.large.4: RocketMQ 5.x basic edition cluster flavor, instance TPS 2,000

  • rocketmq.b2.large.8: RocketMQ 5.x basic edition cluster flavor, instance TPS 4,000

  • rocketmq.b2.large.12: RocketMQ 5.x basic edition cluster flavor, instance TPS 6,000

  • rocketmq.p1.large.1: RocketMQ 5.x professional edition single-node flavor, instance TPS 500

  • rocketmq.p2.large.8: RocketMQ 5.x professional edition cluster flavor, instance TPS 4,000

  • rocketmq.p2.large.12: RocketMQ 5.x professional edition cluster flavor, instance TPS 6,000

  • rocketmq.p2.large.20: RocketMQ 5.x professional edition cluster flavor, instance TPS 10,000

  • rocketmq.p2.large.40: RocketMQ 5.x professional edition cluster flavor, instance TPS 20,000

  • rocketmq.p2.large.100: RocketMQ 5.x professional edition cluster flavor, instance TPS 50,000

  • rocketmq.p2.large.150: RocketMQ 5.x professional edition cluster flavor, instance TPS 75,000

  • rocketmq.p2.large.200: RocketMQ 5.x professional edition cluster flavor, instance TPS 100,000

  • rocketmq.p2.large.300: RocketMQ 5.x professional edition cluster flavor, instance TPS 150,000

Default Value

N/A

broker_num

Yes

String

Definition

Number of brokers.

Constraints

N/A

Range

N/A

Default Value

1

Request Parameters

None

Response Parameters

Status code: 200

Table 2 Response body parameters

Parameter

Type

Description

core_num

Integer

Number of vCPUs.

total_extend_storage_space

Integer

Definition

Estimated storage space. If the entered broker_num is less than or equal to the actual value of the current instance, the storage space of the current instance is displayed. Otherwise, the estimated storage space of the instance with the entered broker_num is displayed.

Range

N/A

Example Requests

GET https://{endpoint}/v2/rocketmq/products/cores?instance_id={instance_id}&product_id={product_id}&broker_num={broker_num}

Example Responses

Status code: 200

Successful

{
  "core_num" : 100,
  "total_extend_storage_space" : 300
}

Status Codes

Status Code

Description

200

Successful

Error Codes

See Error Codes.

Parent Topic: Other APIs