Prompt Title: Spring Cloud Config to RabbitMQ

To publish an event from Spring Cloud Config to RabbitMQ, you can use Spring Cloud Bus. Spring Cloud Bus is a framework for distributing messages across a Spring Boot application. It can be used to broadcast configuration changes to all instances of an application, including those running in different data centers or availability zones.

Here are the steps to publish an event from Spring Cloud Config to RabbitMQ using Spring Cloud Bus:

1. Add the following dependencies to your project:

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<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-config-server</artifactId>
</dependency>

2. Configure RabbitMQ in your Spring Boot application by adding the following properties to your application.yml file:

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spring:
  rabbitmq:
    host: localhost
    port: 5672
    username: guest
    password: guest

3. Configure Spring Cloud Bus to use RabbitMQ by adding the following property to your application.yml file:

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spring:
  cloud:
    bus:
      enabled: true
      refresh:
        enabled: true
      amqp:
        enabled: true

4. Use Spring Cloud Bus to publish an event by sending a POST request to the /actuator/bus-refresh endpoint. This will trigger a refresh of all connected instances of your application.

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POST http://localhost:8080/actuator/bus-refresh

5. The configuration changes will be broadcast to all instances of your application that are connected to the Spring Cloud Bus, and the @RefreshScope annotated beans will be refreshed with the new values.

That's it! By following these steps, you can publish events from Spring Cloud Config to RabbitMQ using Spring Cloud Bus.