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  • Michael Feathers Wants Error Elimination to Be a Design Driver

    Michael Feathers finds errors fascinating, but acknowledges that most developers don't spend a lot of time focusing on them. He also thinks most error handling is kind of giving up. Although best known for his books about working with legacy code, Feathers used his keynote presentation at Explore DDD 2018 to discuss how eliminating errors can be a design driver for software systems.

  • Finding Bounded Contexts Using Domain Storytelling

    When working with Domain-Driven Design (DDD), bounded context is a core concept. Domain storytelling is a way of finding how people and systems work together within a domain which then can be used to identify the bounded contexts and how they are interconnected, Stefan Hofer and Henning Schwentner explained at the recent DDD Europe 2018 conference in Amsterdam.

  • Vaughn Vernon Uses Reactive DDD to Model Uncertainty in Microservices

    Microservices and reactive systems bring with them uncertainty about messages arriving out of order, multiple times, or not at all. How to react to such uncertainty is a business decision, says Vaughn Vernon, and is best captured by modeling the uncertainty using concepts of Domain-Driven Design.

  • Eric Evans: Domain-Driven Design Even More Relevant Now

    Eric Evans, author of Domain-Driven Design, said the concepts in the book he wrote in 2003 are even more relevant now than they were 14 years ago. As the range of tools and technologies has expanded, some lend themselves to the principles of DDD better than others we've had in the past. Evans said, "DDD is not about technology, but is not indifferent about technology."

  • Capture - Embed - Protect, Guidelines for Domain-Driven Design

    When using the core philosophy and the practices of DDD as guidelines for software design and development, they can be summarized in three principles: Capture – Embed – Protect, Steven A. Lowe claimed in his presentation at this year’s DDD eXchange conference. Capture the domain model. Embed the model in the code. Protect the domain model from corruption from other domains.

  • Kiki Carter, Enterprise Architect at Lightbend, Speaks to InfoQ at ETE

    Kiki Carter, enterprise architect at Lightbend, spoke to InfoQ at the 2017 Emerging Technologies for the Enterprise (ETE) Conference about her thoughts on microservices, reactive systems, Scala vs. Java, and the SMACK stack.

  • Bringing the Domain Back to Software Development

    If you read the business press of today, you will find that the business side of the world sees IT as an impediment that holds them back. To overcome this, we need to shift focus from the machines to the domains and start reading and learning about the domains we are working in, David West noted in his presentation at the recent DDD Europe Conference in Amsterdam.

  • Using Models in Developing Software for Self-Driving Cars

    Models play an important role in developing software for autonomous systems like self-driving cars; they are used to simulate and verify behavior, document the system, and generate code. Jonathan Sprinkle explains how to model software used in autonomous systems, the benefits of modeling, using test data to validate the software that drives a car and techniques for writing reliable code.

  • Eric Evans: Is Domain-Driven Design Beneficial for Software Development?

    The last couple of years the interest in Domain-Driven Design (DDD) has increased, Eric Evans noted in his keynote at the recent DDD eXchange conference in London. He thinks that we are in a time when developers care more about design, partially because we are working more with distributed systems where models have a higher value.

  • Working with Domain Experts in a DDD World

    Conversations with domain experts and the language used are central in Domain-Driven Design (DDD), but often this is hard because we don’t speak the same language, explained Cyrille Martraire in his presentation at the Domain-Driven Design Europe conference earlier this year when sharing his experiences working with domain experts in DDD-driven environments.

  • Technologies and Trends in Developing Complex Software Systems

    The Software-Centric Systems Conference explored new technologies, trends, and experiences in developing complex software systems. InfoQ spoke with Rob Howe and Martijn Rutten, two members of the program committee, about the main challenges that software development is facing, technology developments, driving innovation, and deploying agile to improve process reliability and deliver value.

  • Lagom, a New Microservices Framework

    Lightbend, the company behind Akka, has released an open source microservices framework, Lagom built on their Reactive Platform, in particular the Play Framework and the Akka family of products together with ConductR for deployment. By default, Lagom is message-driven and asynchronous, and using distributed CQRS persistence patterns with event sourcing as the primary implementation.

  • Model-based Migration Approach for Maintenance of Legacy Software

    Hans van Wezep, software architect at Philips Healthcare, talked about model-based migration at the Bits&Chips Software Engineering conference. InfoQ did an interview with van Wezep about the challenges in maintaining legacy software, why manual refactoring is error prone, using models to refactor and migrate a codebase, and the benefits of using models when maintaining legacy software.

  • Developing Provably-Correct Software Using Formal Methods

    Computer-checked models can be used to prove that core communications and state management in a software program are 100% logically correct. Such models can also be used to generate 100% correct source code. The usage of formal methods can reduce costs and time to market and help to deliver highly reliable software products.

  • Aggregates, Entities and Value Objects in Domain-Driven Design

    Move as much as possible of the behaviour away from the Entities into Value Objects when working with Aggregates, As more behaviour is needed this is added as new value objects, Paul Rayner recommends in a series of blog posts covering aggregates, entities and value objects, all concepts from Domain-Driven Design (DDD).

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