Share RabbitMQ connection with a Dynamic Module

A Dockerized NestJS application demonstrating the use of ConfigurableModuleBuilder for creating dynamic modules with RabbitMQ integration.

Features

• ✅ Dynamic module configuration using ConfigurableModuleBuilder.
• ✅ RabbitMQ integration with @golevelup/nestjs-rabbitmq.
• ✅ Event publishing with routing key some.event.
• ✅ Event consumer in AppModule.
• ✅ Docker and Docker Compose setup.
• ✅ Node.js 24.13.

[!NOTE]

Best practice: register RabbitMQ once and reuse the connection.

RabbitMQ connections are expensive; In NestJS with @golevelup/nestjs-rabbitmq, the usual pattern is:

• Configure RabbitMQModule once in your app (root module or a shared module).
• Export the connection provider (AmqpConnection) so feature modules can inject it.
• Do not call RabbitMQModule.forRoot/forRootAsync again inside feature modules unless you intentionally want another, named connection.