There is not really an official definition for what a JMS broker is, but there is conceptual difference between a message queue and broker. Here is my take on it. A message queue only looks at the message headers to figure out where to send the message, the message queue does not examine the message … Read more
Mule is an ESB (Enterprise Service Bus). RabbitMQ is a message broker. An ESB provides added layers atop of a message broker such as routing, transformations and business process management. It is a mediator between applications, integrating Web Services, REST endpoints, database connections, email and ftp servers – you name it. It is a high-level … Read more
Apache ActiveMQ is a great workhorse full of features and nice stuff. It’s not the fastest MQ software around but fast enough for most use cases. Among features are flexible clustring, fail-over, integrations with different application servers, security etc. Apache Apollo is an attempt to write a new core for ActiveMQ to cope with a … Read more
That means a topic is appropriate. A queue means a message goes to one and only one possible subscriber. A topic goes to each and every subscriber.
Edit: My initial answer had a strong focus on AMQP. I decided to rewrite it to offer a wider view on the topic. These 3 messaging technologies have different approaches on building distributed systems : RabbitMQ is one of the leading implementation of the AMQP protocol (along with Apache Qpid). Therefore, it implements a broker … Read more