Preface

To this day, enterprise message queuing is a concept that is not well understood by most software developers. Commercial message-oriented middleware (MOM) did not help to encourage adoption of the process; most of the MOMs on the market were closed source, were costly to buy and support, and required trained system administrators for proper installation. ActiveMQ was developed to provide an open source alternative: its central theme is to put the power in the hands of developers. To date, the ActiveMQ project has been successful in this endeavor by creating a MOM that is easy to install, administer, and utilize, while providing a large number of unique features.

Today, six or seven years after ActiveMQ was originally created, it’s surprising ...

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