Table of Contents
This chapter briefly introduces Java Message Service (hereafter JMS), and describes the features of JEUS MQ.
Java Message Service (JMS) is a Java Standard API defined to execute inter-application communication through messaging. This section defines the necessary messaging components and message model interfaces, and describes the relationships between them.
JMS has the following features.
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Loosely coupled structure
Message producers and message consumers operate independently.
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Asynchronous communication
Message consumers can receive messages as soon as they reach the server even if there are no requests.
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Reliable message transmission
Messages are guaranteed to be delivered exactly once.
Note
For more information about JMS or API usage, refer to JMS specification (http://java.sun.com/products/jms/) and Java EE tutorials (http://java.sun.com/javaee/reference/tutorials/).
JEUS MQ is the implementation entity of the Java Message Service specification that is included in JEUS (TmaxSoft Java EE server). JEUS MQ supports non-blocking I/Os and XA transactions. It also provides highly available message services with enhanced security.
JEUS MQ supports JMS version 2.0 specification and provides the following key features.
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Supports non-blocking I/O
By using non-blocking I/O, JEUS MQ can simultaneously process more clients by using the same system resources.
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Supports XA Transaction
Supports XA transaction that is an option defined in the JMS specification.
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Enhanced Security
Supports the secure socket layer (SSL) communication. JEUS security can be configured to strengthen the security.
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High Availability
Clients can automatically recover from server or network failures.
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Scalability
Loads can be balanced by JEUS MQ clustering when the number of clients or messages increases.