By Bruce Snyder, Dejan Bosanac, Rob Davies
Applications in organizations have to converse, most typically performed by way of messaging. Apache ActiveMQ is an open-source implementation of the Java Message carrier (JMS), which supplies messaging in Java applications.
ActiveMQ in Action is an intensive, sensible advisor to imposing message-oriented platforms utilizing ActiveMQ and Java. Co-authored through one of many major ActiveMQ builders, Bruce Snyder, the publication starts off with the anatomy of a center Java message, then strikes fast via basics together with information patience, authentication and authorization. Later chapters conceal complicated beneficial properties resembling configuration and function tuning, illustrating each one notion with a operating real-world inventory portfolio application.
Readers will learn how to combine ActiveMQ with Apache Geronimo and JBoss, and tie into either Java and non-Java applied sciences together with AJAX, .NET, C++, Ruby, and the Spring framework.
buy of the print ebook comes with a suggestion of a unfastened PDF, ePub, and Kindle publication from Manning. additionally to be had is all code from the book.
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Extra resources for ActiveMQ in Action
6 is preferred. This must be installed prior to attempting this section. html. If you’re using Mac OS X, you should already have Java installed. com/java/ download/. Once you have the Java SE installed, you’ll need to test that it is set up correctly. To do this, open a terminal or command line and enter the command shown in the following listing. 3-b01-279, mixed mode) Your output may be slightly different depending on the operating system you’re using, but the important part is that there’s output from the Java SE.
This is valu- able for clients who consume messages from more than one destination. JMSDeliveryMode—JMS supports two types of delivery modes for messages: persis- tent and nonpersistent. The default delivery mode is persistent. Each delivery mode incurs its own overhead and implies a particular level of reliability. * Persistent—Advises the JMS provider to persist the message so it’s not lost if the provider fails. A JMS provider must deliver a persistent message once and only once. In other words, if the JMS provider fails, the message won’t be lost and won’t be delivered more than once.
Message selectors can’t reference a message payload, only the message headers and properties. Session object. 1. 1 are used to create queries against message headers and properties. Consider the message defined in the next listing. This message defines two properties that will be used for filtering messages in the example that follows. send(destination, textMessage); added to message Now let’s look at some examples of filtering messages via message selectors using the preceding message. 5 Filter messages using the SYMBOL header ...
ActiveMQ in Action by Bruce Snyder, Dejan Bosanac, Rob Davies