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DefaultMQPushConsumerImpl拉取消息首先，DefaultMQPushConsumerImpl 是一个实现了 RocketMQ 的消费者客户端接口的类。该类的主要作用是从 RocketMQ 的 Broker 获取消息并进行消费。主要可以通过pullMessage方法进行获取对...

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RocketMQ 如何保证消息的可靠性，包括消息存储、消息传输和消息确认等关键机制？

RocketMQ 是一个开源的分布式消息队列系统，由阿里巴巴集团开发并开源。作为一个高性能、可靠、可扩展的消息中间件，RocketMQ 为分布式应用程序提供了可靠的消息传递机制。本文将详细介绍 RocketMQ 如何保证消息的可靠性，包括消息存储、消息传输和消息确认等关键机制。 1. 消息存储机制 ...

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最近在根据《RocketMQ实战》和《Apache RocketMQ 从入门到实战》学习RocketMQ，对书里提到的快速失败机制有些疑惑。根据waitTimeMillsInSendQueue默认值200ms，若发送至队列中的消息超过200ms一直未被消费（比如消费者宕机），是否也会触发快速失败机...

RabbitMQ 如何通过多种机制来保证全链路数据的可靠性

RabbitMQ 是一个功能强大的开源消息队列系统，广泛应用于分布式系统中的消息传递和异步通信。在分布式系统中，数据的可靠性非常重要，特别是对于消息队列来说，如何保证消息的100%不丢失是一个关键问题。本文将介绍 RabbitMQ 如何通过多种机制来保证全链路数据的可靠性，以及一些最佳实践和注意事项...

[帮助文档] RocketMQ消费重试机制的原理、版本兼容性和使用建议_云消息队列 RocketMQ 5.x系列_云消息队列 RocketMQ 版(RocketMQ)

消费者出现异常，云消息队列 RocketMQ 版会根据消费重试策略重新投递该消息进行故障恢复。本文介绍消费重试的应用场景、原理机制、版本兼容性和使用建议。

RabbitMQ中的消息确认机制是什么？为什么需要消息确认？

RabbitMQ中的消息确认机制是什么？为什么需要消息确认？RabbitMQ中的消息确认机制是指生产者发送消息后，等待消费者确认消息已经被正确接收和处理的一种机制。消息确认机制的主要目的是确保消息的可靠传递和处理，以避免消息丢失或重复处理的情况发生。为什么需要消息确认机制呢？在分布式系统中，消息的发...

消息中间件系列教程（12） -RabbitMQ-消息确认机制

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一文读懂RocketMQ的高可用机制——集群管理高可用

一、前言在前三篇我们介绍了一文读懂RocketMQ的高可用机制——消息存储高可用一文读懂RocketMQ的高可用机制——消息发送高可用一文读懂RocketMQ的高可用机制——消息消费高可用这一篇我们来说一下集群管理是如何保证高可用的。集群管理的高可用主要体现在 NameServer 的设计上，Nam...

一文读懂RocketMQ的高可用机制——消息消费高可用

一、前言在前两篇我们介绍了一文读懂RocketMQ的高可用机制——消息存储高可用一文读懂RocketMQ的高可用机制——消息发送高可用这一篇我们来说一下消息消费是如何保证高可用的。要想知道消息消费的高可用，那我们得知道消息是怎么消费的吧。我们知道 Consumer 集群中每个 Consumer 都有...

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