The single active consumer indicates that a queue allows only one consumer to consume messages at a time. Other consumers remain in the standby status. When the active consumer disconnects, the system automatically selects the next consumer. This mechanism is suitable for sequence-sensitive tasks, such as order status changes.
Constraints and Limitations
Only Managed Edition clusters support configuring the single active consumer. Serverless Edition clusters do not support configuring it.
Configuring Single Active Consumer
When creating a queue, select whether to enable Single Active Consumer in Other Advanced Options. For specific steps, see Creating a Queue.