Apache ActiveMQ is anopen sourcemessage broker written in Java together with a fullJava Message Service (JMS) client. It provides "Enterprise Features" which in this case means fostering the communication from more than one client or server. Supported clients include Java via JMS 1.1 as well as several other "cross language" clients.[2] The communication is managed with features such ascomputer clustering and ability to use anydatabase as a JMSpersistence provider besidesvirtual memory,cache, andjournal persistency.[3]
There's another broker under the ActiveMQ umbrella code-namedArtemis.
The ActiveMQ project was originally created by its founders from LogicBlaze[4] in 2004, as an open source message broker, hosted by CodeHaus. The code and ActiveMQ trademark were donated to theApache Software Foundation in 2007, where the founders continued to develop the codebase with the extended Apache community.
Artemis is another broker under the ActiveMQ umbrella based on theHornetQ code-base which was donated[5] from the JBoss community to the Apache ActiveMQ community in 2015. Artemis is the "next generation" broker from ActiveMQ.[6][7] Artemis is a multi-protocol, embeddable, high performance, clustered, asynchronous messaging system.[8][9]
ActiveMQ Classic[10] uses several modes for high availability, including both file-system and database row-level locking mechanisms, sharing of the persistence store via a shared filesystem, or true replication usingApache ZooKeeper. ActiveMQ supports a horizontal scaling mechanism called a Network of Brokers[11] out of the box. ActiveMQ supports a number of transport protocols, includingOpenWire,STOMP,MQTT,AMQP,REST, andWebSockets.[12]
ActiveMQ is used inenterprise service bus implementations such as Apache ServiceMix[13] andMule.[14] Other projects using ActiveMQ includeApache Camel[15] andApache CXF[16] inSOA infrastructure projects.[17]
Coinciding with the release of Apache ActiveMQ 5.3, the world's first results for the SPECjms2007 industry standard benchmark were announced. Four results were submitted to theSPEC and accepted for publication. The results cover different topologies to analyze the scalability of Apache ActiveMQ in two dimensions.[18][19]
Apache is used in enterprise software and offers limited ActiveMQ support on a voluntary basis. Users that need more extensive support may need to consult commercial companies specializing in ActiveMQ.[20]
