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RocketMQ集群消費與廣播消費模式

 更新時間：2023年02月14日 08:56:40   作者：每天都要進(jìn)步一點點  
這篇文章主要介紹了RocketMQ集群消費與廣播消費模式，消息隊列RocketMQ版支持集群消費和廣播消費，本文介紹集群消費和廣播消費的基本概念、適用場景、功能差異、注意事項以及設(shè)置方式

一、概述

RocketMQ主要提供了兩種消費模式：集群消費以及廣播消費。我們只需要在定義消費者的時候通過setMessageModel(MessageModel.XXX)方法就可以指定是集群還是廣播式消費，默認(rèn)是集群消費模式，即每個Consumer Group中的Consumer均攤所有的消息。下面我們通過簡單的示例演示一下。

二、集群消費

一個 Consumer Group 中的 Consumer 實例平均分?jǐn)傁M消息。

使用方法：setMessageModel(MessageModel.CLUSTERING)

定義生產(chǎn)者

public class MQProducer {
    public static void main(String[] args) throws MQClientException, UnsupportedEncodingException, RemotingException, InterruptedException, MQBrokerException {
        // 創(chuàng)建DefaultMQProducer類并設(shè)定生產(chǎn)者名稱
        DefaultMQProducer mqProducer = new DefaultMQProducer("producer-group-test");
        // 設(shè)置NameServer地址，如果是集群的話，使用分號;分隔開
        mqProducer.setNamesrvAddr("10.0.91.71:9876");
        // 消息最大長度 默認(rèn)4M
        mqProducer.setMaxMessageSize(4096);
        // 發(fā)送消息超時時間，默認(rèn)3000
        mqProducer.setSendMsgTimeout(3000);
        // 發(fā)送消息失敗重試次數(shù)，默認(rèn)2
        mqProducer.setRetryTimesWhenSendAsyncFailed(2);
        // 啟動消息生產(chǎn)者
        mqProducer.start();
        // 循環(huán)十次，發(fā)送十條消息
        for (int i = 1; i <= 10; i++) {
            String msg = "hello, 這是第" + i + "條同步消息";
            // 創(chuàng)建消息，并指定Topic(主題)，Tag(標(biāo)簽)和消息內(nèi)容
            Message message = new Message("CLUSTERING_TOPIC", "", msg.getBytes(RemotingHelper.DEFAULT_CHARSET));
            // 發(fā)送同步消息到一個Broker，可以通過sendResult返回消息是否成功送達(dá)
            SendResult sendResult = mqProducer.send(message);
            System.out.println(sendResult);
        }
        // 如果不再發(fā)送消息，關(guān)閉Producer實例
        mqProducer.shutdown();
    }
}
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC57E00000, offsetMsgId=0A005B4700002A9F00000000000010A9, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=3], queueOffset=5]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC57EF0001, offsetMsgId=0A005B4700002A9F0000000000001174, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=5]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC57F60002, offsetMsgId=0A005B4700002A9F000000000000123F, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=1], queueOffset=6]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC57FB0003, offsetMsgId=0A005B4700002A9F000000000000130A, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=2], queueOffset=5]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC58050004, offsetMsgId=0A005B4700002A9F00000000000013D5, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=3], queueOffset=6]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC58110005, offsetMsgId=0A005B4700002A9F00000000000014A0, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=6]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC581D0006, offsetMsgId=0A005B4700002A9F000000000000156B, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=1], queueOffset=7]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC58290007, offsetMsgId=0A005B4700002A9F0000000000001636, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=2], queueOffset=6]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC582E0008, offsetMsgId=0A005B4700002A9F0000000000001701, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=3], queueOffset=7]
SendResult [sendStatus=SEND_OK, msgId=AC6E005625A818B4AAC211CC58340009, offsetMsgId=0A005B4700002A9F00000000000017CC, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=7]

定義消費者A

public class MQConsumerA {
    public static void main(String[] args) throws MQClientException {
        // 創(chuàng)建DefaultMQPushConsumer類并設(shè)定消費者名稱
        DefaultMQPushConsumer mqPushConsumer = new DefaultMQPushConsumer("consumer-group-test");
        // 設(shè)置NameServer地址，如果是集群的話，使用分號;分隔開
        mqPushConsumer.setNamesrvAddr("10.0.91.71:9876");
        // 設(shè)置Consumer第一次啟動是從隊列頭部開始消費還是隊列尾部開始消費
        // 如果不是第一次啟動，那么按照上次消費的位置繼續(xù)消費
        mqPushConsumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
        // 設(shè)置消費模型，集群還是廣播，默認(rèn)為集群
        mqPushConsumer.setMessageModel(MessageModel.CLUSTERING);
        // 消費者最小線程量
        mqPushConsumer.setConsumeThreadMin(5);
        // 消費者最大線程量
        mqPushConsumer.setConsumeThreadMax(10);
        // 設(shè)置一次消費消息的條數(shù)，默認(rèn)是1
        mqPushConsumer.setConsumeMessageBatchMaxSize(1);
        // 訂閱一個或者多個Topic，以及Tag來過濾需要消費的消息，如果訂閱該主題下的所有tag，則使用*
        mqPushConsumer.subscribe("CLUSTERING_TOPIC", "*");
        // 注冊回調(diào)實現(xiàn)類來處理從broker拉取回來的消息
        mqPushConsumer.registerMessageListener(new MessageListenerConcurrently() {
            // 監(jiān)聽類實現(xiàn)MessageListenerConcurrently接口即可，重寫consumeMessage方法接收數(shù)據(jù)
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgList, ConsumeConcurrentlyContext consumeConcurrentlyContext) {
                MessageExt messageExt = msgList.get(0);
                String body = new String(messageExt.getBody(), StandardCharsets.UTF_8);
                System.out.println("消費者接收到消息: " + messageExt.toString() + "---消息內(nèi)容為：" + body);
                // 標(biāo)記該消息已經(jīng)被成功消費
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        // 啟動消費者實例
        mqPushConsumer.start();
    }
}

消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=6, sysFlag=0, bornTimestamp=1646362604534, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602259, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F000000000000123F, commitLogOffset=4671, bodyCRC=540691780, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=7, CONSUME_START_TIME=1646362604548, UNIQ_KEY=AC6E005625A818B4AAC211CC57F60002, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 51, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第3條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=5, sysFlag=0, bornTimestamp=1646362604527, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602253, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001174, commitLogOffset=4468, bodyCRC=240311509, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=6, CONSUME_START_TIME=1646362604549, UNIQ_KEY=AC6E005625A818B4AAC211CC57EF0001, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 50, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第2條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=6, sysFlag=0, bornTimestamp=1646362604561, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602293, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F00000000000014A0, commitLogOffset=5280, bodyCRC=1516474450, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=7, CONSUME_START_TIME=1646362604579, UNIQ_KEY=AC6E005625A818B4AAC211CC58110005, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 54, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第6條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=7, sysFlag=0, bornTimestamp=1646362604573, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602303, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F000000000000156B, commitLogOffset=5483, bodyCRC=1946878403, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=8, CONSUME_START_TIME=1646362604586, UNIQ_KEY=AC6E005625A818B4AAC211CC581D0006, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 55, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第7條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=204, queueOffset=7, sysFlag=0, bornTimestamp=1646362604596, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602322, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F00000000000017CC, commitLogOffset=6092, bodyCRC=2041898758, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=8, CONSUME_START_TIME=1646362604616, UNIQ_KEY=AC6E005625A818B4AAC211CC58340009, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, 48, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第10條同步消息

定義消費者B

public class MQConsumerB {
    public static void main(String[] args) throws MQClientException {
        // 創(chuàng)建DefaultMQPushConsumer類并設(shè)定消費者名稱
        DefaultMQPushConsumer mqPushConsumer = new DefaultMQPushConsumer("consumer-group-test");
        // 設(shè)置NameServer地址，如果是集群的話，使用分號;分隔開
        mqPushConsumer.setNamesrvAddr("10.0.91.71:9876");
        // 設(shè)置Consumer第一次啟動是從隊列頭部開始消費還是隊列尾部開始消費
        // 如果不是第一次啟動，那么按照上次消費的位置繼續(xù)消費
        mqPushConsumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
        // 設(shè)置消費模型，集群還是廣播，默認(rèn)為集群
        mqPushConsumer.setMessageModel(MessageModel.CLUSTERING);
        // 消費者最小線程量
        mqPushConsumer.setConsumeThreadMin(5);
        // 消費者最大線程量
        mqPushConsumer.setConsumeThreadMax(10);
        // 設(shè)置一次消費消息的條數(shù)，默認(rèn)是1
        mqPushConsumer.setConsumeMessageBatchMaxSize(1);
        // 訂閱一個或者多個Topic，以及Tag來過濾需要消費的消息，如果訂閱該主題下的所有tag，則使用*
        mqPushConsumer.subscribe("CLUSTERING_TOPIC", "*");
        // 注冊回調(diào)實現(xiàn)類來處理從broker拉取回來的消息
        mqPushConsumer.registerMessageListener(new MessageListenerConcurrently() {
            // 監(jiān)聽類實現(xiàn)MessageListenerConcurrently接口即可，重寫consumeMessage方法接收數(shù)據(jù)
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgList, ConsumeConcurrentlyContext consumeConcurrentlyContext) {
                MessageExt messageExt = msgList.get(0);
                String body = new String(messageExt.getBody(), StandardCharsets.UTF_8);
                System.out.println("消費者接收到消息: " + messageExt.toString() + "---消息內(nèi)容為：" + body);
                // 標(biāo)記該消息已經(jīng)被成功消費
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        // 啟動消費者實例
        mqPushConsumer.start();
    }
}

消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=5, sysFlag=0, bornTimestamp=1646362604513, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602244, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F00000000000010A9, commitLogOffset=4265, bodyCRC=664430631, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=6, CONSUME_START_TIME=1646362604525, UNIQ_KEY=AC6E005625A818B4AAC211CC57E00000, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第1條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=5, sysFlag=0, bornTimestamp=1646362604539, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602266, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F000000000000130A, commitLogOffset=4874, bodyCRC=1573106993, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=6, CONSUME_START_TIME=1646362604547, UNIQ_KEY=AC6E005625A818B4AAC211CC57FB0003, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 52, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第4條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=6, sysFlag=0, bornTimestamp=1646362604549, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602276, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F00000000000013D5, commitLogOffset=5077, bodyCRC=1940595872, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=7, CONSUME_START_TIME=1646362604558, UNIQ_KEY=AC6E005625A818B4AAC211CC58050004, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 53, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第5條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=6, sysFlag=0, bornTimestamp=1646362604585, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602311, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001636, commitLogOffset=5686, bodyCRC=2061592313, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=7, CONSUME_START_TIME=1646362604592, UNIQ_KEY=AC6E005625A818B4AAC211CC58290007, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 56, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第8條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=7, sysFlag=0, bornTimestamp=1646362604590, bornHost=/10.0.90.139:51996, storeTimestamp=1646362602317, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001701, commitLogOffset=5889, bodyCRC=1418327912, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=8, CONSUME_START_TIME=1646362604598, UNIQ_KEY=AC6E005625A818B4AAC211CC582E0008, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 57, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第9條同步消息

可以看到， 生產(chǎn)者發(fā)送了10條消息，ConsumerA與ConsumerB屬于同一個消費者組，集群消費模式下每個消費者攤分消費所有消息。注意，兩個消費者的ConsumerGroup組名需要一致，才算是同一個消費者組。

簡單總結(jié)一下：

1、在Rocket集群消費模式下，（訂閱）同一個主題（Topic）下的消息，對于不同的消費者組是一種“廣播形式”，即每個消費者組的都會消費消息。

2、在Rocket集群消費模式下，（訂閱）同一個主題（Topic）下的消息，對于相同的消費者組的消費者而言是一種集群模式，即同一個消費者組內(nèi)的所有消費者均分消息并消費。

三、廣播消費

一條消息被多個 Consumer 消費，即使這些 Consumer 屬于同一個 Consumer Group，消息也會被 Consumer Group 中的每個 Consumer 都消費一次，廣播消費中的 Consumer Group 概念可以認(rèn)為在消息劃分方面無意 義。

使用方法：setMessageModel(MessageModel.BROADCASTING)

我們將前面的消費者定義中的消息模式設(shè)置為BROADCASTING即可，重新啟動后觀察控制臺輸出。

生產(chǎn)者

SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48F970000, offsetMsgId=0A005B4700002A9F0000000000001898, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=8]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48FAE0001, offsetMsgId=0A005B4700002A9F0000000000001963, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=1], queueOffset=8]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48FBB0002, offsetMsgId=0A005B4700002A9F0000000000001A2E, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=2], queueOffset=7]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48FCB0003, offsetMsgId=0A005B4700002A9F0000000000001AF9, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=3], queueOffset=8]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48FDB0004, offsetMsgId=0A005B4700002A9F0000000000001BC4, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=9]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D48FF10005, offsetMsgId=0A005B4700002A9F0000000000001C8F, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=1], queueOffset=9]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D4900C0006, offsetMsgId=0A005B4700002A9F0000000000001D5A, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=2], queueOffset=8]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D4901A0007, offsetMsgId=0A005B4700002A9F0000000000001E25, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=3], queueOffset=9]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D4902A0008, offsetMsgId=0A005B4700002A9F0000000000001EF0, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=0], queueOffset=10]
SendResult [sendStatus=SEND_OK, msgId=AC6E0056231818B4AAC211D490360009, offsetMsgId=0A005B4700002A9F0000000000001FBB, messageQueue=MessageQueue [topic=CLUSTERING_TOPIC, brokerName=broker-a, queueId=1], queueOffset=10]

消費者A

消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143064, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139802, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001898, commitLogOffset=6296, bodyCRC=664430631, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143093, UNIQ_KEY=AC6E0056231818B4AAC211D48F970000, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第1條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143086, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139825, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001963, commitLogOffset=6499, bodyCRC=240311509, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143125, UNIQ_KEY=AC6E0056231818B4AAC211D48FAE0001, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 50, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第2條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=7, sysFlag=0, bornTimestamp=1646363143099, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139841, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001A2E, commitLogOffset=6702, bodyCRC=540691780, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=8, CONSUME_START_TIME=1646363143144, UNIQ_KEY=AC6E0056231818B4AAC211D48FBB0002, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 51, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第3條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143115, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139857, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001AF9, commitLogOffset=6905, bodyCRC=1573106993, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143158, UNIQ_KEY=AC6E0056231818B4AAC211D48FCB0003, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 52, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第4條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143131, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139870, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001BC4, commitLogOffset=7108, bodyCRC=1940595872, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143165, UNIQ_KEY=AC6E0056231818B4AAC211D48FDB0004, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 53, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第5條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143153, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139897, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001C8F, commitLogOffset=7311, bodyCRC=1516474450, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143188, UNIQ_KEY=AC6E0056231818B4AAC211D48FF10005, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 54, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第6條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143180, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139922, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001D5A, commitLogOffset=7514, bodyCRC=1946878403, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143205, UNIQ_KEY=AC6E0056231818B4AAC211D4900C0006, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 55, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第7條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143194, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139933, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001E25, commitLogOffset=7717, bodyCRC=2061592313, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143238, UNIQ_KEY=AC6E0056231818B4AAC211D4901A0007, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 56, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第8條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=204, queueOffset=10, sysFlag=0, bornTimestamp=1646363143222, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139956, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001FBB, commitLogOffset=8123, bodyCRC=2041898758, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=11, CONSUME_START_TIME=1646363143240, UNIQ_KEY=AC6E0056231818B4AAC211D490360009, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, 48, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第10條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=10, sysFlag=0, bornTimestamp=1646363143210, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139947, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001EF0, commitLogOffset=7920, bodyCRC=1418327912, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=11, CONSUME_START_TIME=1646363143240, UNIQ_KEY=AC6E0056231818B4AAC211D4902A0008, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 57, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第9條同步消息

消費者B

消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143064, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139802, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001898, commitLogOffset=6296, bodyCRC=664430631, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143110, UNIQ_KEY=AC6E0056231818B4AAC211D48F970000, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第1條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=7, sysFlag=0, bornTimestamp=1646363143099, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139841, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001A2E, commitLogOffset=6702, bodyCRC=540691780, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=8, CONSUME_START_TIME=1646363143140, UNIQ_KEY=AC6E0056231818B4AAC211D48FBB0002, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 51, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第3條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143086, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139825, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001963, commitLogOffset=6499, bodyCRC=240311509, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143141, UNIQ_KEY=AC6E0056231818B4AAC211D48FAE0001, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 50, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第2條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143115, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139857, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001AF9, commitLogOffset=6905, bodyCRC=1573106993, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143163, UNIQ_KEY=AC6E0056231818B4AAC211D48FCB0003, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 52, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第4條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143131, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139870, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001BC4, commitLogOffset=7108, bodyCRC=1940595872, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143169, UNIQ_KEY=AC6E0056231818B4AAC211D48FDB0004, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 53, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第5條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143153, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139897, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001C8F, commitLogOffset=7311, bodyCRC=1516474450, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143187, UNIQ_KEY=AC6E0056231818B4AAC211D48FF10005, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 54, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第6條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=2, storeSize=203, queueOffset=8, sysFlag=0, bornTimestamp=1646363143180, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139922, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001D5A, commitLogOffset=7514, bodyCRC=1946878403, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=9, CONSUME_START_TIME=1646363143208, UNIQ_KEY=AC6E0056231818B4AAC211D4900C0006, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 55, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第7條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=3, storeSize=203, queueOffset=9, sysFlag=0, bornTimestamp=1646363143194, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139933, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001E25, commitLogOffset=7717, bodyCRC=2061592313, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=10, CONSUME_START_TIME=1646363143233, UNIQ_KEY=AC6E0056231818B4AAC211D4901A0007, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 56, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第8條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=0, storeSize=203, queueOffset=10, sysFlag=0, bornTimestamp=1646363143210, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139947, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001EF0, commitLogOffset=7920, bodyCRC=1418327912, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=11, CONSUME_START_TIME=1646363143234, UNIQ_KEY=AC6E0056231818B4AAC211D4902A0008, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 57, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第9條同步消息
消費者接收到消息: MessageExt [brokerName=broker-a, queueId=1, storeSize=204, queueOffset=10, sysFlag=0, bornTimestamp=1646363143222, bornHost=/10.0.90.139:52985, storeTimestamp=1646363139956, storeHost=/10.0.91.71:10911, msgId=0A005B4700002A9F0000000000001FBB, commitLogOffset=8123, bodyCRC=2041898758, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='CLUSTERING_TOPIC', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=11, CONSUME_START_TIME=1646363143236, UNIQ_KEY=AC6E0056231818B4AAC211D490360009, CLUSTER=DefaultCluster}, body=[104, 101, 108, 108, 111, 44, 32, -24, -65, -103, -26, -104, -81, -25, -84, -84, 49, 48, -26, -99, -95, -27, -112, -116, -26, -83, -91, -26, -74, -120, -26, -127, -81], transactionId='null'}]---消息內(nèi)容為：hello, 這是第10條同步消息

可以看到， 生產(chǎn)者發(fā)送了10條消息，ConsumerA與ConsumerB屬于同一個消費者組，廣播模式下每個消費者都會全量消費所有消息。

到此這篇關(guān)于RocketMQ集群消費與廣播消費模式的文章就介紹到這了,更多相關(guān)RocketMQ集群消費內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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