Introduction

Message-driven beans (MDB) are an exciting new feature of the EJB 2.0 specification. They open up a whole new realm of application architectural and integration alternatives not previously available in J2EE. This chapter describes the concepts and structure of message-driven beans and MDB development, and introduces some new integration patterns and best practices when you are considering utilizing MDBs in your design.

*New EJB 2.0 - Message-driven beans

Message-driven beans are new in EJB 2.0, and, therefore, are new to WebSphere Version 5.

Developers were able to achieve MDB-like functionality in WebSphere Version 4 Enterprise Edition with message beans. These message beans were a specialized class of stateless session beans, ...

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