InfoQ Homepage Design Content on InfoQ
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Alan Cooper on Working Backwards for Better Product Design
At the Agile India conference, design expert Alan Cooper gave a keynote talk on Working Backwards in which he described an approach to design and innovation centered on three key elements: know your user and their goals, see possible solutions, and see the big picture.
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Why Software Developers Should Take Ethics into Consideration
Most of the software that influences the behavior of human beings wasn’t created with strong ethical constructs around it. Software developers should ask themselves ethical questions like “who does this affect?”, “who could get hurt by this?”, and “who does this disadvantage or advantage?”, try to answer them, and be comfortable with questions they can’t answer yet.
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Q&A with Laura Bell on Continuous Security at QCon London
Q&A with Laura Bell at QCon London. We discuss her keynote, continuous security and her own professional security journey.
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Notes From the DDD Europe 2018 Conference
The recently held DDD Europe 2018 conference in Amsterdam was the third in order and saw almost 700 attendees. The conference has a focus on Domain-Driven Design (DDD), and included four keynotes, 19 presentations, one track for open space and 17 sessions focused on live coding or hands-on. Notable speakers included Eric Evans, Dave Snowden, Rebecca Wirfs-Brock and Cyrille Martraire.
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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.
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Retroactive and Future Events in an Event Sourced System
When Thomas Pierrain started a new project with an asset management company, one important requirement was the ability to go back in time to understand why they took decisions that today look strange. At the recent DDD Europe 2018 conference in Amsterdam, Pierrain discussed his experiences when building an event sourced system that included some temporal challenges.
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Evolving CQRS and Event Sourced Systems
After talking with people about upgrading of CQRS and event sourced systems, Michiel Overeem came to the conclusion that many working with event sourced systems lack an understanding and don’t know how to approach the problem. At the recent DDD Europe 2018 conference in Amsterdam he described how this was a trigger for him to do an exploratory research on how to evolve this kind of system.
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Eric Evans: Practicing Domain-Driven Design
For Eric Evans, who gave a keynote at the recent DDD Europe 2018 conference in Amsterdam, it’s important to explore and practice building software. He enjoys working with strategic patterns in Domain-Driven Design (DDD), but what he finds really interesting is taking a difficult domain and reason about it differently; breaking out of the mental box trying to find new concepts.
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How Technical Practices Support Evolutionary Architecture and Continuous Delivery
Technical practices of XP such as TDD, Refactoring, CI and Pair Programming support emergent design and enable evolving your architecture. The first practice you need for continuous delivery is CI, committing to mainline every day. Being able to write clean, well-factored, and well-tested modular code is the most important skill for developers.
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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.
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PayPal’s API Style Guide and Patterns
PayPal has created their platform as services connected to each other through RESTful APIs. They have developed guidelines and design patterns for creating and using these APIs, making them publicly available for other developers to get inspiration for their own projects.
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TypeScript 2.5 Released, Adds Language Level Refactoring
Microsoft has released TypeScript 2.5. The release is light on new language features, but has some new abilities including basic refactoring built into the language service itself.
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Selecting an Event Architecture
When designing a distributed system, maybe based on microservices, and you are considering an event architecture, there are several models and technologies available. When choosing how to implement the architecture the non-functional requirements are a main factor, David Dawson claims when describing different styles of event architectures in a recent blog post.
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Process Managers in Event-Based Systems
Publishing events to notify about changes in a domain keeps different domains decoupled from each other, but if there really is a logical flow of events it becomes implicit and hard to follow. A better solution is to use a Process Manager to keep track of the overall process, Bernd Rücker stated in his presentation at this year’s DDD eXchange conference.
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The Importance of Learning, Psychological Safety, and Continuous Delivery: Agile on the Beach 2017
At the Agile on the Beach 2017 conference, run in Cornwall, UK, several hundred speakers and attendees gathered to discuss the latest developments within the field of agile and post-agile software development methodologies.