Vaughn Vernon

Vaughn Vernon is a software developer and architect with more than 30 years of experience in a broad range of business domains. Vaughn is a leading expert in Domain-Driven Design, and a champion of simplicity and reactive systems. He consults and teaches around Domain-Driven Design and reactive software development, helping teams and organizations realize the potential of business-driven and reactive systems as they transition from technology-driven legacy web implementation approaches. As he does so, he puts strong emphasis on embracing simplicity whenever possible. Vaughn is the author of three books: Implementing Domain-Driven Design, Reactive Messaging Patterns with the Actor Model, and Domain-Driven Design Distilled, all published by Addison-Wesley.

Domain Model Discover Learning Diagram

Architecture vs Model

One of the biggest problems with business software is that architecture gets promoted more than the domain model. Further, most domain models are ordinary, and could be implemented by school students for a lot less cost than the 7-9 figures often spent. Yet, often the software architecture supporting a model—almost certainly anemic—is generally over engineered. …

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Domain Object Types Stores

XOOM Ecosystem

We have invested heavily in the creation of a software ecosystem that accelerates the development and delivery of solutions to complex business systems that use leading-edge architectures. The ecosystem described here is the open source XOOM platform SDK. There are a number of open source components available with the platform, but these are most easily …

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Green Abstract image

No Comparison

Our first principles highlight our unique motivations and goals. Some have asked us to compare the VLINGO XOOM platform and specific components, such as XOOM Actors, with frameworks and toolkits offered by various vendors. This is the wrong question because it assumes that our platform is founded on the same philosophies and motivations as those …

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Reactive People

Why Reactive?

A person described as being reactive is generally viewed as less mature and responsible than a person who is proactive. This perception doesn’t consider the nature of actions taken by entities, such as people. Normally a person who is considered proactive is actually reacting to one or more stimuli, but they decide that reacting sooner …

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Microservices and [Micro]services

The week began as busy as ever. And then I learned that one more task — beyond everything else on my plate — must be accomplished. Which task? The one you are reading. Why? For the record, at Uber, we’re moving many of our microservices to what @copyconstruct calls macroservices (wells-sized services). Exactly b/c testing and maintaining thousands of …

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