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Introduction: Openstack is an implementation of the IAAS architecture (infrastructure as a service), and OpenStack is an implementation of the IAAS architecture by NASA (National Aeronautics and Space Administration) A free software and open source project developed in collaboration with Rackspace and licensed under the Apache license.The foll ...

Summary:This blog is the tenth in the "Java Second Kill System Practical Series Articles". In this blog, we will adopt RabbitMQ's death letter queue to deal with the situation that "user's death letter queue generates orders successfully but fails to pay late", so we can see the strength of RabbitMQ's death letter queue in t ...

Preface Before that, we introduced the installation of RabbitMQ, the comparison of major message middleware, the core concept of AMQP, the use of management console, and the Quick Start RabbitMQ. This chapter introduces the advanced features of RabbitMQ. It is introduced in two parts (top/bottom). How can messages be delivered 100% successfu ...

Links to the original text: http://blog.51cto.com/zero01/2173288 Foreword: We now have a system developed with the micro-service architecture model. There is a commodity service and order service in the system, and they are all synchrono ...

SpringBook Integration AMQP (RabbitMQ) Adding pom dependencies <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency> application.properties configuration spring.rabbitmq.host=***.***.***.*** spring.rabbitmq.port=5762 spring.rabbitm ...

Optimizing rabbitmq In this paper, we will mainly talk about some optimization of RabbitMQ cluster, because there are many problems in the business system of the company because the MQ cluster can not be connected recently. This paper mainly summarizes some solutions: 1. Architecture of RabbitMQ Cluster: _Our company's RabbitMQ cluster archite ...

1. Overview (Hongyang) It is well known that when Activity does not specify the orientation of the screen and configChanges explicitly, the user will restart the screen when he rotates it. Of course, in response to this situation, Android offers several options: A. If there is a small amount of dat ...

1. Introduction of nop event mechanism Scenario: After successful payment, customers need to send SMS and email to inform them that the order payment is successful (SMS and email are implemented by different modules) Implementation: 1. Define OrderPaidEvent event for successful payment. 2. Define SMS, mailbox two consumers jointly monitor the ...

1. Preface RabbitMQ was actually the first MQ framework that I came into contact with. I remember that I went to the library to see it by myself when I was in college. Since the English of RabbitMQ website was not too difficult, it was also learned by referencing the website. There were six chapters, which were developed by Node at that time, a ...

RabbitMQ of the message queue from knocking on the door to introducing (Lecture 5) - "Routing" Rabbit MQ in the message queue from knocking to introducing Prerequisite Focus of this tutorial binding Direct exchange Multiple binding Sending logs Subscribe Merge code This article is translated from RabbitMQ Official Course ...