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1, IntroductionRocketMQ is Alibaba's open source distributed messaging middleware. It draws on Kafka's implementation and supports functions such as message subscription and publishing, sequential message, transaction message, timing message, message backtracking, dead letter queue and so on. RocketMQ architecture is mainly divided into four pa ...

1, windows installation 1.1. erlang Download erlang download page: https://www.erlang.org/downloads erlang download address: https://erlang.org/download/otp_win64_24.0.exe You can install directly in the next step. When you encounter the following figure, install visual C++ Configure environment variables after installation And add% Er ...

The following is the RocketMQ - Producer series article index: 1: Start the process (this article) 2: Routing dynamic updates 3: Send Mode Analysis + Message Type Difference 4: Sending process of producer message 5: Routing queue selection, client redundancy policy (QA) Introduction to Producer Producer is the sender of the Ro ...

1, Release confirmation principle         The producer sets the channel to confirm mode. Once the channel enters the confirm mode, all messages published on the channel will be assigned a unique ID (starting from 1). Once the message is delivered to all matching queues, the broker will send a confirmation to ...

entrance The startup entry of the NameServer source code is in the main method of the NamesrvStartup class You can see that the methods are well encapsulated, and each method does one thing. The core method is these two NamesrvController controller = createNamesrvController(args); start(controller); How is NamesrvController create ...

Practical application maven dependency <dependency> <groupId>org.apache.rocketmq</groupId> <artifactId>rocketmq-client</artifactId> <version>4.9.1</version> </dependency> General message message sending 1. The Producer sends a synchronization message This reliable synchronous ...

1. Bus message bus   Spring Cloud Bus is A message bus within the Spring Cloud system, supporting RabbitMQ and Kafka message middleware. The so-called message bus is simply understood as A message center. Many micro service instances can be connected to the bus, and the instances can send or receive information to the message center ( ...