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From the vice president and chief technologist for SOA at Oracle Corporation

Dave Chappell

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Top Stories by Dave Chappell

Since releasing my latest book, Enterprise Service Bus (O'Reilly Media, 2004), I have been doing a fair amount of visiting corporations, conducting seminars, and generally discussing with enterprise architects the subject of enterprise service-oriented architecture (SOA) and how an enterprise service bus (ESB) backbone can be leveraged to provide a framework for an enterprise SOA. Along the way, I have been asked many questions about the nature of an ESB. I have also fended off some misconceptions that have been growing in the general IT population regarding what an ESB is and when, where, and how it can be used. I have gathered together the most popular questions and misconceptions, and offer some clarity in the form of a "top ten" list. Myth #1. ESB is just a new name for EAI. While many IT architecture groups are focusing on building SOAs, they still inevitably be... (more)

ESB Integration Patterns

The past several years have seen some significant technology trends, such as service-oriented architecture (SOA), enterprise application integration (EAI), business-to-business (B2B), and Web services. These technologies have attempted to address the challenges of improving the results and increasing the value of integrated business processes, and have garnered the widespread attention of IT leaders, vendors, and industry analysts. The enterprise service bus (ESB) draws the best traits from these and other technology trends to form a new architecture for integration. The ESB conc... (more)

Beyond The JMS Specification

The Java Message Service (JMS) is a specification put forth by Sun to define a common set of APIs and common semantics for messaging-oriented middleware providers. An increasing number of MOM vendors have embraced this specification, and new vendors are building messaging products suitable for doing business-to-business communication across the Internet. The result is a landscape where developers can feel comfortable about writing an application using a standard set of APIs while still having an ample selection of JMS-compliant vendors to choose from. However, the JMS specificat... (more)

Service-Oriented Integration: Making the Right Choices to Support Next-Generation Integration

  Applications are increasingly being developed "built-to-integrate," providing the ability to easily expose key functionality through commonly defined interfaces. Gartner calls this concept SODA, or Service-Oriented Development of Applications, fitting into its overall Service-Oriented Architecture landscape. When applied to the ever-present integration challenge, SODA represents a transition to service-oriented integration. In this presentation, Chappell will examine the leading choices for supporting service-oriented integration: enterprise service buses (ESBs), integration ... (more)

Will the Real Reliable Messaging Please Stand Up? Is it WS-Reliability, WS-ReliableMessaging, or WS-ReliableConundrum?

Open standards for reliable Web services messaging, such as WS-Reliability, can provide the missing link to bridge the gap between organizations and help make Web services a truly enterprise-capable technology for standards-based systems integration, says Web Services Journal technical editor David Chappell. Along with security, reliable asynchronous communications has been one of the gaping holes in today's Web services architecture. Lack of reliability, due to the inherent nature of using SOAP over protocols such as HTTP, is one of the biggest obstacles to the adoption of Web s... (more)