Benefits of JMS
There are a number of reasons to use a messaging system for interprocess communication instead of making direct method calls. A messaging system provides a clean way to connect disparate systems within an application. Messaging systems also help divide long-running work into multiple transactions for greater efficiency. When communication is asynchronous, the client need not wait for all of the processing to complete.
Messaging systems also provide reliability. JMS can optionally save a message to a persistent store. There is, however, a trade-off between reliability and performance. The messaging system runs faster if messages are not persistent, but the application must tolerate lost messages in the event of a server crash. ...
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