apache-kafka - spring-kafka AckMode中MANUAL和MANUAL_IMMEDIATE有什么区别

Question

从 spring-docs，我可以看到

MANUAL - the message listener is responsible to acknowledge() the Acknowledgment; after which, the same semantics as BATCH are applied.

MANUAL_IMMEDIATE - commit the offset immediately when the Acknowledgment.acknowledge() method is called by the listener.

但是如果监听器提交偏移量到底有什么区别。为 MANUAL 做了哪些额外的步骤模式

Answer 1

MANUAL - 在处理完最后一次轮询的所有结果后，将确认排队并在一个操作中提交偏移量。

MANUAL_IMMEDIATE - 只要在监听器线程上执行 ack，就会立即提交偏移量(同步或异步)。