Message Queue for Apache RocketMQ limits the frequency at which a user can call a Message Queue for Apache RocketMQ API operation. If the number of requests that you send to call an operation reaches the request rate limit, new requests fail. This may interrupt your business. This topic describes the API request rate limits for each Message Queue for Apache RocketMQ user.
API request rate limit for each user
A user refers to an Alibaba Cloud account. API request rate limit for each user indicates the maximum number of requests that can be made by an Alibaba Cloud account and the Resource Access Management (RAM) users within the Alibaba Cloud account to call an API operation per second or per minute.
For example, the request rate limit of the OnsRegionList operation for a user is 50 queries per second (QPS). An Alibaba Cloud account contains five RAM users. The number of requests that are sent within 1 second by using the credentials of the Alibaba Cloud account and the RAM users to call the OnsRegionList operation cannot exceed 50.
- Message Queue for Apache RocketMQ does not impose request rate limits on all API operations. The following tables describe the request rate limits on Message Queue for Apache RocketMQ API operations.
- Take note of the units that are specified in the following tables. By default, the unit is QPS. The request rate limits of specific operations are measured by other units such as queries per minute.
Region management
| API | Request rate limit for each user |
|---|---|
| OnsRegionList | 50 QPS |
Service activation
| API | Request rate limit for each user |
|---|---|
| OpenOnsService | N/A |
Instance management
| API | Request rate limit for each user |
|---|---|
| OnsInstanceBaseInfo | 50 QPS |
| OnsInstanceCreate | 10 QPS |
| OnsInstanceDelete | 10 QPS |
| OnsInstanceInServiceList | 50 QPS |
| OnsInstanceUpdate | 10 QPS |
Topic management
| API | Request rate limit for each user |
|---|---|
| OnsTopicCreate | 10 QPS |
| OnsTopicDelete | 10 QPS |
| OnsTopicList | 10 QPS |
| OnsTopicStatus | 1 QPS |
| OnsTopicSubDetail | 10 QPS |
Group management
| API | Request rate limit for each user |
|---|---|
| OnsGroupCreate | 10 QPS |
| OnsGroupDelete | 10 QPS |
| OnsGroupList | 10 QPS |
| OnsGroupSubDetail | 10 QPS |
| OnsGroupConsumerUpdate | 10 QPS |
Tag management
| API | Request rate limit for each user |
|---|---|
| TagResources | N/A |
| ListTagResources | 10 QPS |
| UntagResources | 10 QPS |
Consumption management
| API | Request rate limit for each user |
|---|---|
| OnsConsumerAccumulate | 10 QPS |
| OnsConsumerStatus | 10 QPS |
| OnsConsumerGetConnection | 10 QPS |
| OnsConsumerResetOffset | 10 QPS |
| OnsConsumerTimeSpan | 10 QPS |
| OnsMessagePush | 10 QPS |
Message query
| API | Request rate limit for each user |
|---|---|
| OnsMessageTrace | 10 QPS |
| OnsMessageGetByMsgId | 10 QPS |
| OnsMessageGetByKey | 10 QPS |
| OnsMessagePageQueryByTopic | 10 queries per minute |
Publishing and subscription statistics
| API | Request rate limit for each user |
|---|---|
| OnsTrendTopicInputTps | 15 queries per minute |
| OnsTrendGroupOutputTps | 15 queries per minute |
Message trace management
| API | Request rate limit for each user |
|---|---|
| OnsTraceGetResult | 10 QPS |
| OnsTraceQueryByMsgId | 30 queries per minute |
| OnsTraceQueryByMsgKey | 30 queries per minute |
Dead-letter message management
| API | Request rate limit for each user |
|---|---|
| OnsDLQMessageGetById | 10 QPS |
| OnsDLQMessagePageQueryByGroupId | 10 QPS |
| OnsDLQMessageResendById | 10 QPS |