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Subscription mode (Publish/Subscribe) When a message is sent to many consumers at one time, the message sent by one producer will be obtained by multiple consumers, that is, the message will be broadcast to all consumers. Application scenario: after updating the commodity inventory, you need to notify multiple caches and databases. The structu ...

1, Introduction    message middleware has a series of functions, such as low coupling, reliable delivery, broadcasting, flow control, final consistency, etc. it has become one of the main means of asynchronous RPC, such as ActiveMQ, RabbitMQ, Kafka, RocketMQ, etc. The main functions of message oriented middleware are as follows: ...

The purpose of this paper is as follows. install Let's talk about RabbitMQ installation first. It is recommended to use Docker image installation. The advantage of Docker installation is that there are few installation steps, the installation method is the same, and it is not easy to make mistakes, regardless of Windows system or Linux. You can ...

After more than 4 years of use experience, Found that there are many misunderstandings and wrong codes on the Internet. In order to clarify some wrong ideas and ways of use. I specially wrote this article to unify everyone's programming standards and naming standards, Facilitate system development and system integration. Added some common q ...

catalogue 1.MQ 1.1 definitions 1.2 what are the advantages of MQ 1.3 different MQ characteristics 2 RabbitMQ AMQP protocol 3 message model supported by rabbitmq 3.1 official website 3.2 introducing dependencies 3.3 the first model (direct connection) 1. Developing producers 2. Develop consumers 3.4 encapsulation of connection tools ...

How to ensure that messages are not lost 1. Message loss caused by network abnormality Do a good job in fault tolerance (try - catch) of the method. Sending messages may fail due to network reasons. After the failure, it will be recorded in the database.Keep a log, and the status of each message sent should be recorded.-- Message record table ...

Work queue:   Work queue The main idea of (also known as Work Queues) is to avoid executing a resource intensive task immediately and having to wait for it to complete. Instead, we schedule the task to be executed later. We encapsulate the task as a message and send it to the queue. The work process running in the background will pop up the t ...

1.MQ introduction 1.1 what is MQ MQ (message queue): translated into message queue. Through the typical producer and consumer model, producers continuously produce messages to the message queue, and consumers continuously obtain messages from the queue. Because the production and consumption of messages are asynchronous, and only care abo ...

1, SpringCloud Stream In the previous article, we explained the function of config + bus to automatically refresh all service configurations. This article continues to explain the message driven Stream Last article address: https://blog.csdn.net/qq_43692950/article/details/122025347 Officially, Spring Cloud Stream is a framework for bui ...

New project pom.xml <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</mod ...