消息队列RocketMQ版consumer 的相关内容

问答 2023-04-06 来自：开发者社区

RocketMQ实例支持多少个 Consumer Gruop？

RocketMQ单实例支持1000个 Consumer Gruop, 如果我要支持5000个Consumer Gruop是不是要买5个实例？这5个实例可以看作是一个整体5000么？还是5个单独的1000？

文章 2022-02-18 来自：开发者社区

从入门到入土（八）RocketMQ的Consumer是如何做的负载均衡的

一、问题描述面试官：RocketMQ的Consumer是如何做的负载均衡？比如：5个Consumer进程同时消费一个Topic，这个Topic只有4个queue会出现啥情况？反之Consumer数量小于queue的数据是啥情况？应聘者：一脸懵逼。二、源码剖析1、RebalancePushImplpublic class RebalancePushImpl extends RebalanceImp....

文章 2022-01-05 来自：开发者社区

RocketMQ源码解析：手把手教老婆看懂consumer接收到的MessageExt

RocketMQ使用教程相关系列目录目录源代码说明MessageExt的源码解析继承于Message，Message源码解析喝点毒鸡汤源代码说明MessageExt位于此包下：package org.apache.rocketmq.common.message;MessageExt的源码解析参数说明在代码里public class MessageExt extends Message { ...

问答 2021-11-11 来自：开发者社区

RocketMQ-Spring 中如何实现RocketMQ Lite Pull Consumer？

问答 2020-12-13 来自：开发者社区

Rocketmq 可否出现多个Consumer实例并且每个实例的GroupId不同？

一个应用中，有多个消费实例，消费不同的类型的业务数据。

问答 2020-07-21 来自：开发者社区

RocketMQ consumer not OnLine，消费者无法消费MQ消息

MQ控制台页面Exception： CODE:206 DESC:Not found the consumer group consume stats, because return offset table is empty, maybe the consumer not consume any message ，在之前是可以正常消费。在一段时间后就不可以消费了。

问答 2019-11-27 来自：开发者社区

rocketmq consumer使用的问题

使用com.aliyun.openservices.ons.api.ONSFactory创建consumer时，指定 properties.put(PropertyKeyConst.ConsumeThreadNums, 4); 但实际的线程数是68。这是为什么？线程数都与什么有关？

文章 2019-09-04 来自：开发者社区

RocketMQ消费失败消息深入分析（consumer,broker的具体处理逻辑）

前言消息队列是分布式系统中重要的组件，主要解决应用耦合，异步消息，流量削锋等问题。目前在生产环境，使用较多的消息队列有ActiveMQ，RabbitMQ，ZeroMQ，Kafka，MetaMQ，RocketMQ等。由于每个消息队列都有它的优势和劣势，我们公司对于不同的场景使用了不同类型的消息队列。对于RocketMQ消费端存在消息消费失败的情况，通常有两种方式，一种是consumer端知道怎么....

文章 2018-11-05 来自：开发者社区

RocketMQ概念详细之Consumer

消费者组和订阅首先你应该关心的是不同的消费者群组可以独立的消费相同的主题，并且每个组都拥有自己的消费偏移量。请确保相同消费者内的每个消费者订阅一样的主题。消息监听器串行消费者将锁定每个消息队列以确保它被顺序消费。这会引起性能丢失，但当你关心消息顺序的实时这是很有用的。不推荐抛异常，你可以用返回ConsumeOrderlyStatus.SUSPEND_CURRENT_QUEUE_A_MOME....

问答 2017-12-19 来自：开发者社区

rocketmq consumer会在消费一段时间后offline

一般在消费4小时以上后，就会无法消费消息，从mq的console中可以查看到，这个consumer已经是offline的状态。

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更新时间 2023-05-10 15:04:11

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