Description:
Enterprise JMS Programming can put enterprise-level development with the Java Message Service into the hands of any capable Java developer. This book successfully mixes a tutorial to the JMS API itself and a discussion of the "big picture" concepts you need to know to architect large systems that use messaging effectively.What distinguishes this title is the clear-as-crystal perspective on what messaging is and how to implement various messaging architectures. This book is far from just a listing of JMS APIs. The author outlines basic messaging concepts, including synchronous and asynchronous processing, plus the publish/subscribe and point-to-point models of message distribution. Early working code examples show off basic message operations (like sending and receiving messages). Then it's on to a nicely packaged demo of using a message-driven bean from Enterprise JavaBeans 2.0. A notable section looks at the various available JMS message types (and when and how to use them). The book then covers larger concepts like transactions and security in JMS and the issues that you'll need to consider when designing secure and reliable enterprise messaging systems. The author looks at ways to make sure your messaging code is as fast and reliable as it can be. (He walks the reader through scenarios in which message queues can fill up, and in one good example, shows how orders for an online store build up in the queue in one business day.) A discussion of administration tasks is followed by real advice and screen shots using BEA WebLogic Application Server 6.1, a popular choice for J2EE/JMS deployment. Final chapters really excel at guiding the user in designing JMS applications by providing hypothetical case studies for no less than four separate scenarios. Using intranet, extranet, and high-volume Internet systems, these examples and the designs outlined here will ensure that you can correctly apply JMS to a wide variety of enterprise-class problems. A final listing of all JMS APIs rounds out this book. Overall, Enterprise JMS Programming sets a high standard for any programming text with its stellar presentation style and clear code examples, which provide the best of theory backed up with practical advice. It's sure to be an extremely worthwhile resource for any developer facing a JMS project. --Richard Dragan Topics covered: Overview and history of the Java Message Service (JMS); guidelines for choosing JMS; types of messages (including text, byte, object, and map messages); message properties explained; constructing and sending messages (illustrated with a variety of message types); receiving messages synchronously and asynchronously; publish/subscribe and point-to-point messaging basics; tutorial for message-driven beans in Enterprise JavaBeans 2.0; understanding and using JMS transactions; security concepts in JMS; tips for maximizing JMS performance (including factors that affect performance, optimized code, and benchmarking); JMS administration (illustrated with BEA WebLogic Application Server 6.1); sample case studies illustrating JMS architectures: a sample real-time financial trading system, a workflow system, a high-volume extranet application for branch offices (for loan applications), and high-volume order-taking systems (for three online e-commerce sites); and a reference listing all JMS classes and APIs.
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