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In this interview, recorded at QCon London, Google architect Gregor Hohpe talks to Stefan Tilkov about his new work on conversation patterns. Building upon his earlier work on enterprise integration patterns, Gregor sees conversation patterns as playing a critical role in real-world interactions, with analogies in the natural world.
After the Oracle acquisition of BEA it was not clear how Oracle was going to integrate often competing SOA products in its and BEA’s portfolio. In his presentation last month David Shaffer, VP Product Managemen for, Oracle Integration, described the Oracle-BEA product Strategy and Roadmap for SOA, BPM, Governance and Events.
The Apache ODE team announced this month the 1.2 release of the Apache ODE project. These releases includes many new features, including external variables,support for WSDL HTTP binding and REST-style Web Services advanced endpoint configuration, and a lot of small improvements and bug fixes.
WS-CDL has struggled from birth to find mainstream acceptance. Now one of the main authors, Steve Ross-Talbot, has compared one of the principles behind WS-CDL, that of precision in defining services, to that of the micrometer during the early industrial revolution. Can WS-CDL have the same impact as the micrometer and really facilitate service reuse?
In this article, Adrien Louis and Marc Dutoo discuss the differences and relative merits of using orchestration vs. routing in a typical ESB setup. They discuss various approaches to connecting services, from low level ones like customized routing, to high-level ones using business oriented approaches like workflow and orchestration, and conclude that there is no one-size-fits-all solution.
In this article, Adrien Louis discusses the pros and cons of two topology alternatives for ESB-based SOAs: A single ESB for the company vs. a system of "departmental" ESBs that are connected to each other. Adrien describes how the alternatives affect issues such as administration, business monitoring, governance, reliability, and orchestration.
In this article, Boris Lublinsky discusses the main approaches to service composition, both from design and implementation point of view, and outlines the benefits of using orchestration. Topics covered include hierarchical vs. conversational composition, composition topologies, and the pros and cons of difference implementation approaches.
In this presentation, Google architect Gregor Hohpe introduces various concepts for to manage more complex interactions between services, including conversations, choreography, and orchestration. He provides a down-to-earth look at these concepts along with the associated Web services standards like WS-BPEL and WS-CDL, and identifies common patterns in service conversation.
Gregor Hohpe debunks many unrealistic claims about SOA and addresses the technical issues, such as the false sense of simplicity, differences to established programming models and the importance of documentation. He also criticizes what he calls "Doodleware", i.e. tools that aim to hide complexity behind a graphical process model notation, and suggests deriving models from running systems.
Composite Software offers a new level of granularity when compared to SaaS (Software as a Service). Composite Software is about enabling "right-sourcing", i.e. move (or keep) arbitrary small or large elements of functionality wherever it is the most cost effective to operate them, not just entire systems. Economically, "right-sourcing" is far more efficient than "outsourcing" and SaaS. The goal of this book is start by understanding today’s software construction processes and technologies and explore why and how it should be evolved to support core composition mechanisms.
