Quotas and limits
Yandex IoT Core has the following limits:
- Quotas are organizational restrictions that can be changed by technical support on request.
- Limits are technical restrictions due to the Yandex.Cloud architecture specifics. The limits cannot be changed.
You can view your current account quotas in the management console.
|Type of limit||Value|
|Maximum size per message||256 KB|
|Frequency of sending messages per device||No more than once per second|
|Maximum length of the subtopic name||1024 symbols|
|Maximum number of aliases per device||5|
Message delivery is not guaranteed if the limits are exceeded.
Retainflag is not supported. When using it, the MQTT broker saves the flagged message and sends it the next time you subscribe a device or registry to a topic.
- Persistent Sessions, when the MQTT broker saves information about a client (device or registry) to reconnect faster, aren't supported.