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catalogue 1, RocketMQ introduction 2, Noun interpretation 3, Installation Installation mode preparation Build RocketMQ cluster in traditional way 4, Integrate Springboot 1, RocketMQ introduction          RocketMQ is a distributed messaging middleware, which was originally developed by Alibaba's ...

Storage path configuration of files broker.properties #Storage path storePathRootDir=/app/rocketmq/store #commitLog storage path storePathCommitLog=/app/rocketmq/store/commitlog #Consumption queue storage path storage path storePathConsumeQueue=/app/rocketmq/store/consumequeue #Message index storage path storePathIndex=/app/rocketmq/store/ind ...

Create project pom file Create a maven project or module and add a rocketmq client dependency. <?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 http://maven.apache ...

Routing center NameServer What data is stored in the routing center?How to avoid a single point of failure of nameserver?How is it different from eukera and zookeeper? 1, NamesServer architecture design How do producers know which server to send messages to in a multi broker server?When a server goes down, how can producers perceive it ...

In the previous part, we can build a RocketMQ cluster, and then use the command line to write messages to RocketMQ and consume them. In this part, let's look at how to use RocketMQ in the project. 1, RocketMQ native API usage Using RocketMQ's native API development is the simplest and most reliable way at present. Here, we use SpringBoot ...

Preface RocketMQ provides transaction messages to resolve issues where the program rolls back abnormally but the message has been sent, such as service B needs to modify user data after service A inserts a data, service A sends a message and program exception causes data insertion rollback, while service B listens for messages and modifies ...

entrance The source code entry for Broker startup is BrokerStartup.java Core process The main process is similar to NameServer startup Create broker controllerStart the BrokerController public static void main(String[] args) { start(createBrokerController(args)); } public static BrokerController start(BrokerController ...