8.3. Producer Flow Control

the queue resource utilization level that enables flow control when exceeded. Once crossed, the queue is considered in danger of overflow, and the broker will cease acknowledging sent messages to induce producer flow control. Note that either queue size or message count capacity utilization can trigger this.

the queue resource utilization level that disables flow control when dropped below. Once crossed, the queue is no longer considered in danger of overflow, and the broker again acknowledges sent messages. Note that once trigger by either, both queue size and message count must fall below this threshold before producer flow control is deactivated.