Java Messaging : Difference between ActiveMQ, Mule, ServiceMix and Camel

java apache-camel activemq messaging apache-servicemix
peakit picture peakit · Apr 24, 2010 · Viewed 30.1k times · Source

I am new to Messaging and want to know the difference between ActiveMQ, Mule, ServiceMix and Camel

Anyone knows how each of these product is different?

Thanks in advance !

EDIT: Also would like to know any good place/resource to learn these things.

Answer

duffymo picture duffymo · Apr 24, 2010

ActiveMQ is a message broker which implements the JMS API and supports a number of cross language clients and network protocols. It lets you implement queues or topics and write listeners or subscribers to respond to queue events.

Mule and ServiceMix are open source ESB (enterprise service bus). An ESB has capabilities beyond JMS: queuing is key, but so are transformation, routing, logging, security, etc.

Apache Camel is an implementation of the patterns in Enterprise Integration Patterns. It can use JMS and other components to put the ideas from that book into place.

JMS is fundamental to the other technologies, like JDBC is the foundation for Hibernate, iBatis, etc.

JMS is a Java API and a specification and TCK (part of Java EE). ActiveMQ is a particular implementation of it.

Camel can use ActiveMQ (and Camel is bundled inside the ActiveMQ broker so you can easily route to and from JMS to the other components Camel supports).

Camel doesn't use Mule or ServiceMix directly; though ServiceMix uses Camel as its preferred routing engine and EIP implementation. Camel does have a ton of different components though that use various different technologies.

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