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1, Delay queue understanding 1. Delay queue concept The delay queue is orderly. The most important feature is reflected in its delay attribute. The elements in the delay queue want to be taken out and processed after or before the specified time. In short, the delay queue is a queue used to store the elements that need to be processed at the ...

3.RabbitMQ cluster construction Absrtact: the cluster scheme of message queue will be adopted in practical production applications. If RabbitMQ is selected, it is necessary to understand its cluster scheme principle Generally speaking, if it is only to learn RabbitMQ or verify the correctness of business engineering, it is OK to use its singl ...

Chapter 4 RabbitMQ advanced (I) of RabbitMQ Practical Guide 1, Introduction The previous chapter describes some basic concepts and usage methods, such as creating switches, queues and binding relationships. However, many details are not stated, some "pits" in the use process are not mentioned, and some advanced usages are not sh ...

1, Brief introduction Open source AMQP implementation, written in Erlang language, supports a variety of clients Distributed, highly available, persistent, reliable and secure Support multiple protocols: AMQP, STOMP, MQTT, HTTP Message Oriented Middleware for business decoupling between multiple systems 2, Basic concepts 1. Exchange: an ...

1. Switch Exchanges 1.1,Exchanges What are Exchanges? The core idea of RabbitMQ messaging model is that messages produced by producers are never sent directly to queues. In fact, usually producers don't even know which queues these messages are delivered to. On the contrary, the producer can only send messages to the exchange. The work of ...

1. The concept of dead letter queues _First, clarify this definition from the conceptual explanation. Dead faith, as its name implies, is a message that cannot be consumed. Literally, it means that producer delivers the message to broker or directly to queue. Consumerer takes the message out of queue for consumption, but sometimes some mes ...

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5. Switch In the previous section, we created a work queue. We assume that behind the work queue, each task is delivered to exactly one consumer (work process). In this section, we will do something completely different - we will convey the message to multiple consumers. This mode is called publish / subscribe To illustrate this pattern, we w ...

RabbitMQ dead letter queue and delay queue RabbitMQ itself has the properties of dead letter queue and dead letter switch. Delay queue can be realized through dead letter queue and dead letter switch. In the e-commerce industry, there is usually a demand: if the order is not paid in time out, the order will be cancelled automatically. Then the ...

preface Basic learning about RabbitMQ 1, What is RabbiMQ? RabbitMQ is a message oriented middleware: it accepts and forwards messages. You can regard it as an express site. When you want to send a package, you put your package in the express station, and the courier will eventually send your express to the recipient. According to t ...