触发限流时，普通消息发送失败依然立即就会重试，而没有重试间隔？

[Yelijah]

2024/08/29 11:11:06 rocketmq-queue-producer-2-worker-5 WARN [org.apache.rocketmq.client.java.impl.producer.ProducerImpl] [none]  Failed to send message, would attempt to resend right now, maxAttempts=5, attempt=2, topic=fine_mq_mt280XST_CLIENT_TO_SERVER_EVENT, messageId(s)=[0166F1BCE23DCE001A06E180CA0000136E], endpoints=ipv4:192.168.101.254:18081, clientId=platform-666fb67bdc-94nhs@26@16@b1i6v42l4t
org.apache.rocketmq.client.java.exception.InternalErrorException: [request-id=dd7a4ee4-9158-4464-962f-821d86cd43be, response-code=50001] org.apache.rocketmq.proxy.common.ProxyException: [PC_SYNCHRONIZED]broker busy, start flow control for a while

2024/08/29 11:11:06 rocketmq-queue-producer-2-worker-19 WARN [org.apache.rocketmq.client.java.impl.producer.ProducerImpl] [none]  Failed to send message, would attempt to resend right now, maxAttempts=5, attempt=3, topic=fine_mq_mt280XST_CLIENT_TO_SERVER_EVENT, messageId(s)=[0166F1BCE23DCE001A06E180CA0000136E], endpoints=ipv4:192.168.101.254:18081, clientId=platform-666fb67bdc-94nhs@26@16@b1i6v42l4t
org.apache.rocketmq.client.java.exception.InternalErrorException: [request-id=7c329dd1-d5ba-4e09-8977-6a69e9a8a0fe, response-code=50001] org.apache.rocketmq.proxy.common.ProxyException: [PC_SYNCHRONIZED]broker busy, start flow control for a while

2024/08/29 11:11:06 rocketmq-queue-producer-2-worker-10 WARN [org.apache.rocketmq.client.java.impl.producer.ProducerImpl] [none]  Failed to send message, would attempt to resend right now, maxAttempts=5, attempt=4, topic=fine_mq_mt280XST_CLIENT_TO_SERVER_EVENT, messageId(s)=[0166F1BCE23DCE001A06E180CA0000136E], endpoints=ipv4:192.168.101.254:18081, clientId=platform-666fb67bdc-94nhs@26@16@b1i6v42l4t
org.apache.rocketmq.client.java.exception.InternalErrorException: [request-id=37558e9c-5831-449d-979a-cd1bd112f95f, response-code=50001] org.apache.rocketmq.proxy.common.ProxyException: [PC_SYNCHRONIZED]broker busy, start flow control for a while

我设置了五次重试间隔，刚好遇到服务器流控，但是为啥依然是立即重试了5次，而没有间隔呢？ 这样连续几次重试全都被限流了。

[Yelijah]

看起来，重试间隔都受proxy服务端控制，会被更新掉，但是为什么这么设计呢？

[Yelijah]

官方文档虽然说客户端会捕获流控错误码，然后加大重试间隔，但是也没捕获broker busy和system busy啊