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Architecture & Design Follow 799 Followers

Selecting an Event Architecture

by Jan Stenberg Follow 9 Followers on  Aug 24, 2017

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.

Culture & Methods Follow 235 Followers

First Annual Retrospective Report Published

by Ben Linders Follow 12 Followers on  Aug 07, 2017

The First Annual Retrospective Report provides a deeper understanding of how retrospectives are used in the real world. The results indicate that retrospectives lead to improved team communication and productivity and help to create an environment of trust. Major challenges are that topics discussed cannot be solved by the team and people do not feel comfortable speaking up.

Architecture & Design Follow 799 Followers

Process Managers in Event-Based Systems

by Jan Stenberg Follow 9 Followers on  Jul 28, 2017 1

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.

Architecture & Design Follow 799 Followers

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

by Jan Stenberg Follow 9 Followers on  Jul 07, 2017

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.

Culture & Methods Follow 235 Followers

Strategy for Mobile and Web Test Coverage

by Ben Linders Follow 12 Followers on  Jun 22, 2017

Teams need to match testing with the market usage patterns across geographies of their apps as consumers are expecting smooth apps functionality across all digital channels. Here's a methodology and index for considering device/OS combinations together with other characteristics like aging, screen parameters and other testing related guidelines for data driven test coverage of the mobile market.

Architecture & Design Follow 799 Followers

The Importance of Patterns in DDD

by Jan Stenberg Follow 9 Followers on  Feb 28, 2017

There are lots of patterns outside of Domain-Driven Design (DDD) that are important to know, and they will help you design better systems, Cyrille Martraire claimed in his presentation at the recent DDD Europe Conference in Amsterdam when discussing the importance of patterns.

Architecture & Design Follow 799 Followers

Eric Evans: DDD is Not for Perfectionists

by Jan Stenberg Follow 9 Followers on  Feb 15, 2017

A problem with Domain-Driven Design (DDD) since the beginning has been the too common hunt for perfect designs, but DDD is not for perfectionists. In order to stop that hunt you need to have some idea of how to create software that is well designed, yet not perfect, Eric Evans noted in his presentation at the recent DDD Europe Conference in Amsterdam.

Architecture & Design Follow 799 Followers

The Dangers of If Statements in Domain Logic

by Jan Stenberg Follow 9 Followers on  Feb 10, 2017 3

The if statement found in most programming languages has two major roles, validating input to protect the domain from erroneous data, and for dealing with business logic inside the domain. Unfortunately, we spend too little time managing the risks from a business or domain perspective, Udi Dahan claimed in his presentation at the recent DDD Europe Conference in Amsterdam.

Architecture & Design Follow 799 Followers

Bringing the Domain Back to Software Development

by Jan Stenberg Follow 9 Followers on  Feb 08, 2017

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.

Architecture & Design Follow 799 Followers

Start with Events and DDD When Building Microservices

by Jan Stenberg Follow 9 Followers on  Dec 28, 2016 2

Domain-Driven Design (DDD) is a great technique bringing designs closer to the domains we are working in, but too often we make early decisions with a focus on structure, which is not the intention of DDD. Instead we should start with the events in a domain, Russ Miles claims when describing the advantages of going “events-first” when building microservices.

Architecture & Design Follow 799 Followers

Focus on the Process, Not on Individual Microservices

by Jan Stenberg Follow 9 Followers on  Dec 18, 2016

The key to success when working with a microservices based distributed system is to focus on the distributed process as a whole, not on the microservices themselves. The services are the least important part, Eric Ess claimed at the recent Microservices Conference in London, in his presentation on how to monitor distributed processes at jet.com.

Development Follow 194 Followers

GitLab Survey Highlights Some Trends among Developers

by Sergio De Simone Follow 5 Followers on  Nov 04, 2016

GitLab has released the outcomes of a survey they conducted among software professionals from 362 startups from July 6 through July 27. Main highlights are developers' preference for using latest tools and more collaboration; security is high-priority, but 81 percent admitted to releasing software before it’s ready.

Culture & Methods Follow 235 Followers

Achieving Cloud-Native Operability

by Ben Linders Follow 12 Followers on  Oct 13, 2016

To drive operational maturity you need a microservices architecture, continuous delivery process, DevOps culture and platform automation. Together these four help you to transform your whole organization for achieving cloud-native operability to continuously deliver additional value to your customers.

Culture & Methods Follow 235 Followers

Don't Copy the Spotify Model

by Ben Linders Follow 12 Followers on  Oct 06, 2016 6

The Spotify model can help you to understand how things are done at Spotify, but you shouldn’t copy it in your own organization. It changes all the time as people at Spotify learn and discover new things. There is no one way in which software is developed at Spotify.

Architecture & Design Follow 799 Followers

Behaviour-Driven Development Anti-Patterns

by Jan Stenberg Follow 9 Followers on  Sep 30, 2016 1

Behaviour-Driven Development (BDD) can help in improving how business stakeholders and software developers communicate with each other, but there are some common anti-patterns when using Cucumber to run the automated tests, which Aslak Hellesøy, Matt Wynne and Steve Tooke described in a recent discussion.

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