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  this section describes the process of Consumer receiving messages, which is divided into Pull and Push modes. 1. initialization   as mentioned in the previous section, there are two ways for a Consumer to accept a client: Broker finds that the client list has changed and informs all consumers to perform Rebalance Consumer automatic ...

Knowledge changes fate, rolling code makes me happy, and I will continue to swim in the open source industry in 2020 < br / > Take a look at what you like and get into the habit < br / > Give me a Star, Click to learn about the implementation solution of component-based interface service based on spring boot We have been using Sp ...

Article directory Separation of implementation and declaration Do not use using namespace std; The enhancement of C + + to C language Key 1 references Notes for reference The nature of quotation Pointer reference Constant reference Member function call const to decorate object instance Construction ...

When configuring the nginx.conf file, it is easy to see that some of the configuration items can be configured in either an http block, a server block, or a location block.But not all configuration items can be configured anywhere. Depending on the role they play, nginx defines where each configuration block can be used.Since a configuration it ...

1. What is CountDownLatch CountDownLatch was introduced in Java 1.5, along with the concurrency tool classes CyclicBarrier, Semaphore, ConcurrentHashMap, and BlockingQueue, which all exist under the java.util.concurrent package.CountDownLatch is a class that enables one thread to wait for other threads to finish their work before executing.For ...

I. Development Phase (1) Unit testing The most important thing in the development phase is unit testing, and Spring Boot's support for unit testing is already complete. 1. Add dependencies to the pom.xml file <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</arti ...

Zhang Shenyaohttps://blog.csdn.net/weixin_34452850/article/details/88851419 Transaction messages are a very important feature provided by RocketMQ. They are open source after version 4.x and can be used to easily implement distributed transactions.This article gives a detailed description of the transaction messages for RocketMQ and gives a c ...

DirectX 12 is Microsoft's latest graphics API library, which is only supported on Win10 system (if it is not Win10, it must be upgraded to Win10). My biggest feeling about this API is that it is particularly complex, because it exposes many underlying methods. Even though I have learned DX9, I still ...

1.1 introduction to monitor What is a web listener? A web listener is a special class in a Servlet that helps developers listen to specific events in the web, such as ServletContext, Httpsession, creation and destruction of ServletRequest, creation, destruction and modification of variables can be added before and after certain actions to real ...

Instance Analysis Previously, we have read the documentation of AMQP, and have a general understanding of AMQP. This paper will go through the basic operation of AMQP from an example. Get ready Environmental Science RabbitMQ server 3.7.16 RabbitMQ client 5.7.3 The client code uses the RabbitMQ tutorial as follows: public static void main(String ...