ApsaraMQ for MQTT limits the frequency at which an API operation is called. The frequency is measured by queries per second (QPS). If the number of requests that you initiate to call an API operation reaches the specified upper limit, throttling is triggered, and your business may be interrupted.
Calls to the API operations on an ApsaraMQ for MQTT broker are limited. The following types of limits are imposed on QPS:
QPS for a single user to call an API operation: If this limit is exceeded, the traffic is throttled. Only traffic that meets the Service Level Agreement (SLA) is guaranteed. For information about the limit on the QPS to call each API operation, see Table 1. QPS for a single user to call an API operation.
Outbound QPS of a single IP address. If this limit is exceeded, the IP address is blocked.
NoteThe limit on the outbound QPS of a single IP address is globally applied and is 300 for each API operation.
API operation | Limit |
100 | |
100 | |
5 | |
10 | |
10 | |
10 | |
500 | |
500 | |
500 | |
500 | |
500 | |
500 | |
500 | |
500 | |
1000 | |
500 | |
100 |