消息队列RocketMQ版消费的相关内容

rocketmq消费源码

mq消费源码依赖com.aliyun.openservicesons-client阿里云rocketmq消息队列参考https://blog.csdn.net/alan_liuyue/article/details/86645887 SpringBoot整合阿里云rocketmq消息队列，创建生产者...

同步异步调用，并谈谈消息队列mq；RocketMQ发送消息和消费消息测试类

同步调用优点：时效性强，打电话、直播，很快可以得到结果同步调用的问题：耦合度高性能和吞吐能力差有额外的资源消耗有级联失败的问题异步：对高并发有要求的功能使用异步优点：耦合度低性能和吞吐能力高流量削峰（对秒杀来说很重要）故障隔离缺点：异步时效性没有同步好依赖于Broker可...

阿里二面：RocketMQ 消费失败了，怎么处理？

大家好，我是君哥。今天来聊一聊 RocketMQ 客户端消息消费失败，怎么办？下面是 RocketMQ 推模式的一段代码：public static void main(String[] args) throws InterruptedException, MQClientException { T...

阿里二面：RocketMQ同一个消费组内的消费者订阅量不同tag，会有问题吗？

面试官：同一个消费组内的消费者，如果订阅了相同的 topic，但是订阅的 tag 不一样，会有什么问题吗？我：会出现丢消息的情况。面试官：能详细说一说吗？我：RocketMQ 要求同一个消费组内的消费者必须订阅关系一致，如果订阅关系不一致，会出...

实战：如何防止mq消费方消息重复消费、rocketmq理论概述、rocketmq组成、普通消息的发送

实战：如何防止mq消费方消息重复消费如果因为网络延迟等原因，mq无法及时接收到消费方的应答，导致mq重试。（计算机网络）。在重试过程中造成重复消费的问题解决思路：1）如果消费方是做数据库操作，那么可以把消息的id，在重试的情况下，会触发主键冲突，...

RocketMQ怎么保证队列顺序消费

消息有序指的是可以按照消息的发送顺序来消费。RocketMQ可以严格的保证消息有序。但这个顺序，不是全局顺序，只是分区（queue）顺序。要全局顺序只能一个分区。之所以出现你这个场景看起来不是顺序的，是因为发送消息的时候，消息发送默认是会采用轮询的方式发送到不通的queue（分区）。如...

解析 RocketMQ 多样消费功能-消息过滤

作者：徒钟什么是消息过滤在消息中间件的使用过程中，一个主题对应的消费者想要通过规则只消费这个主题下具备某些特征的消息，过滤掉自己不关心的消息，这个功能就叫消息过滤。就如上图所描述的，生产者会向主题中写入形形色色的消息，有橙色的、黄色的、还有灰色的，而这个主题有两个消费者，第一个消费者只...

rocketMQ 集群下消息在控制台查看，被消费了。但是我的消费者没有接收到消息。然后点击重新发送才

rocketMQ 集群下消息在控制台查看，被消费了。但是我的消费者没有接收到消息。然后点击重新发送才收得到消息。这是咋回事

RocketMq-消费方式

两种消息消费方式负载均衡模式（集群消费）消费者采用负载均衡方式消费消息，一个分组(Group)下的多个消费者共同消费队列消息，每个消费者处理的消息不同。一个Consumer Group中的各个Consumer实例分摊去消费消息，即一条消息只会投递到一个Consumer Group下面的一个实例。例如...

面试官：RocketMQ 如何保证消息不丢失，如何保证消息不被重复消费？

1、消息整体处理过程这里我们将消息的整体处理阶段分为3个阶段进行分析：Producer发送消息阶段。Broker处理消息阶段。Consumer消费消息阶段。Producer发送消息阶段发送消息阶段涉及到Producer到broker的网络通信，因此丢失消息的几率一定会有，那RocketMQ在此阶段用...

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更新时间 2022-12-22 10:07:18

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