RabbitMQ Spring-AMQP官方教程（一）--Hello World
1 “Hello World!”
Introduction（简介）
RabbitMQ is a message broker: it accepts and forwards messages. You can think about it as a post office: when you put the mail that you want posting in a post box, you can be sure that Mr. Postman will eventually deliver the mail to your recipient. In this analogy, RabbitMQ is a post box, a post office and a postman.
RabbitMQ是一个消息代理：它接受并转发消息。你可以将它看成是一个邮局：当你将想发送的邮件丢进邮箱时，你就可以确定邮差最终会把这封邮件送到收件人手上。通过这个类比来看，RabbitMQ既是邮箱，又是邮局，而且还是邮差。