Message Queue for Apache RocketMQ limits the frequency that a single user calls an API operation. The frequency is measured by the queries per second (QPS). Throttling is triggered when the number of calls to an API operation per second exceeds the maximum QPS. Throttling may interrupt your services. Therefore, call an API operation based on your needs. This topic describes the maximum QPS of each API operation allowed by Message Queue for Apache RocketMQ for a single user.
What is the maximum QPS per user of an API operation?
The maximum QPS per user of an API operation indicates the maximum number of calls that can be initiated by an Alibaba Cloud account and its Resource Access Management (RAM) users to an API operation per second or minute.
For example, the maximum QPS of the OnsRegionList API operation for a single user is 50, and one Alibaba Cloud account and its five RAM users call this API operation. Then, the six accounts can call the OnsRegionList API operation no more than 50 times per second.
- Not all API operations implement throttling against individual users. The following tables describe the details.
- Take note of the units of QPS in all the following tables. The default unit is times/second. Other units, for example, times/minute, are expressly given if used.
Region management
| Operation | Maximum QPS per user |
|---|---|
| OnsRegionList | 50 |
Service activation
| Operation | Maximum QPS per user |
|---|---|
| OpenOnsService | None |
Instance management
| Operation | Maximum QPS per user |
|---|---|
| OnsInstanceBaseInfo | 50 |
| OnsInstanceCreate | 10 |
| OnsInstanceDelete | 10 |
| OnsInstanceInServiceList | 50 |
| OnsInstanceUpdate | 10 |
Topic management
| Operation | Maximum QPS per user |
|---|---|
| OnsTopicCreate | 1 |
| OnsTopicDelete | 1 |
| OnsTopicList | 10 |
| OnsTopicStatus | 1 |
| OnsTopicUpdate | 10 |
| OnsTopicSubDetail | 10 |
Group management
| Operation | Maximum QPS per user |
|---|---|
| OnsGroupCreate | 1 |
| OnsGroupDelete | 1 |
| OnsGroupList | 10 |
| OnsGroupSubDetail | 10 |
| OnsGroupConsumerUpdate | 10 |
Tag management
| Operation | Maximum QPS per user |
|---|---|
| TagResources | None |
| ListTagResources | 10 |
| UntagResources | 10 |
Consumption management
| Operation | Maximum QPS per user |
|---|---|
| OnsConsumerAccumulate | 10 |
| OnsConsumerStatus | 10 |
| OnsConsumerGetConnection | 10 |
| OnsConsumerResetOffset | 10 |
| OnsConsumerTimeSpan | 10 |
| OnsMessagePush | 10 |
Message query
| Operation | Maximum QPS per user |
|---|---|
| OnsMessageTrace | 10 |
| OnsMessageGetByMsgId | 10 |
| OnsMessageGetByKey | 10 |
| OnsMessagePageQueryByTopic | 10 times/minute |
Publishing and subscription statistics
| Operation | Maximum QPS per user |
|---|---|
| OnsTrendTopicInputTps | 15 times/minute |
| OnsTrendGroupOutputTps | 15 times/minute |
Message tracing
| Operation | Maximum QPS per user |
|---|---|
| OnsTraceGetResult | 10 |
| OnsTraceQueryByMsgId | 30 times/minute |
| OnsTraceQueryByMsgKey | 30 times/minute |
Dead-letter queues
| Operation | Maximum QPS per user |
|---|---|
| OnsDLQMessageGetById | 10 |
| OnsDLQMessagePageQueryByGroupId | 10 |
| OnsDLQMessageResendById | 10 |