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DDMQ is a distributed messaging product built by DiDi Infrastructure Team based on Apache RocketMQ. As a distributed messaging middleware, DDMQ provides low latency, high throughput and high available messaging service to many important large-scale distributed systems inside DiDi. DDMQ provides realtime messaging, delay-time messaging and transactional messaging to satisfy different scenarios. Through an easy-to-use Web Console and simple SDK Client, developers can experience producing and consuming messages in the most simple and stable way.

Features

• Messaging model: support both P2P and Pub/Sub messaging model

• Massive message storage, support both RocketMQ and Kafka as storage engine

• Low latency & High throughput

• Delay message, use RocksDB as storage engine

• Transactional message: provide transaction similar to X/Open XA

• Multiple language client SDK: provide client SDK in PHP, Java, Go, C/C++, Python

• Message transition and filter with user-defined Groovy script

• An easy-to-use Web Console

Architecture Overview

Modules

• carrera-common: common code for other modules, such as encapsulate zk operations.

• carrera-producer: message producer proxy with built-in Thrift Server, responsible for forwarding message from SDK client to broker.

• carrera-consumer: message consumer proxy with built-in Thrift Server, provide SDK PULL and HTTP PUSH for message consumption.

• carrera-chronos: delay message module, use RocksDB as storage engine.

• carrera-sdk: producer and consumer SDK, support Java/C/C++/Go/PHP/Python.

• rocketmq: based on RocketMQ (Ver 4.2.0)，add new features such as broker auto fail-over.

• carrera-console: a Spring-based User Web Console.

• carrera-monitor: consumer lag monitor and DDMQ cluster monitor.

• carrera-docker: provide a DDMQ docker image that runs in standalone mode.

Quick Start

We provide a standalone version of DDMQ as Docker image, read this for more information.

Deployment

Dependencies

• 64bit OS, Linux/Unix/Mac
• 64bit JDK 1.8+
• Maven 3.2.x
• MySQL 5.7.x
• Tomcat 7/8/9
• Zookeeper 3.4.x

Deployment Procedures

• Deploy MySQL & Zookeeper

  Install MySQL 5.7: https://dev.mysql.com/doc/mysql-installation-excerpt/5.7/en/

  Install Zookeeper 3.4.x: https://zookeeper.apache.org/doc/r3.1.2/zookeeperStarted.html

• Deploy RocketMQ

  Guide: RocketMQ

• Init MySQL Tables

  Guide: MySQL

• Deploy Console

  Guide: Console

• Init Zookeeper Node and Data

  call console api：

  • curl http://console_addr:8080/carrera/api/odin/internal/v4/initZkPath
  • curl http://console_addr:8080/carrera/api/odin/internal/v4/initAllZk

• Deploy Producer Proxy

  Guide: Deploy PProxy

• Deploy Consumer Proxy

  Guide: Deploy CProxy

• Deploy Chronos

  Guide: Deploy Chronos

Usage

• read DDMQ Console Manual for more information.

Contributing

Welcome to contribute by creating issues or sending pull requests. See Contributing Guide for guidelines.

Contact

Feel free to contact DDMQ developers via ddmq_open_source@didiglobal.com

License

DDMQ is licensed under the Apache License 2.0. See the LICENSE file.