Turning unpredictability into profit.
A liveblog of Don Reinertsens’ Agile Cambridge keynote
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A liveblog of Don Reinertsens’ Agile Cambridge keynote
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liveblog: the accidental sysadmin (starting at 28 minutes into the session)
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A live blog of Mary Poppendieck’s xp2016 keynote.
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Elizabeth Hendrickson keynoting on eXtreme programming at scale, XP2016 Edinburgh. Elizabeth works as VP R&D for Cloud foundry development at Pivotal.
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This is the second part of my writeup of the session I did at XPDays Benelux and XP 2016 in Edinburgh called “Bourne Again” on bootstrapping a unit testing framework in the Bourne Again Shell (bash). This series of posts walk you through the steps I took in 75 minutes of programming.
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I did a public programming session at XPDays Benelux and XP 2016 in Edinburgh called “Bourne Again” on bootstrapping a unit testing framework in the Bourne Again Shell (bash). This series of posts walk you through the steps I took in 75 minutes of programming.
Read More
Testing a command line interface (CLI) should be just like testing a REST interface. A CLI is an adapter concern that we can test drive, separate from the business logic. In this post I’ll show an approach to test drive the command line interface of an application in Python.
Read More
In this post, we will share another benefit of looking through the Hexagonal Architecture lens: it supports making decisions about the architecture of automated tests in your application landscape. It can guide you in questions like:
Read More
Over the years, we have done our share of UI and front end development. Long long time ago with SmallTalk, Visual Basic and Delphi, building web applications with server side rendering and React, and being involved in Angular projects at several clients. Recently we have been building front ends based on Vue.js. In a series of blog posts, we are going to share how we approach (hexagonal) architecture, test driven development, and incremental design in the front end.
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Happy new year! We are restarting open enrollment courses this year. The first one up is our test driven Java course. This will take place in Utrecht, Netherlands in March 19 and 20 in 2020.
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Do you have pending tests left over from yesterday? Better delete them before they grow stale.
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This is the second part of my writeup of the session I did at XPDays Benelux and XP 2016 in Edinburgh called “Bourne Again” on bootstrapping a unit testing framework in the Bourne Again Shell (bash). This series of posts walk you through the steps I took in 75 minutes of programming.
Read More
I did a public programming session at XPDays Benelux and XP 2016 in Edinburgh called “Bourne Again” on bootstrapping a unit testing framework in the Bourne Again Shell (bash). This series of posts walk you through the steps I took in 75 minutes of programming.
Read More
liveblog: the accidental sysadmin (starting at 28 minutes into the session)
Read More
Red-Green-Refactor is broken, because the psychological reward happens at green. When you get that reward, you feel the task has been completed, and are inclined to stop. Therefore refactoring is a lot rarer than it should be.
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Do you have pending tests left over from yesterday? Better delete them before they grow stale.
Read More
Do you have pending tests left over from yesterday? Better delete them before they grow stale.
Read More
Red-Green-Refactor is broken, because the psychological reward happens at green. When you get that reward, you feel the task has been completed, and are inclined to stop. Therefore refactoring is a lot rarer than it should be.
Read More
Hot reloading a Halogen app with Parcel requires almost no configuration. Demo
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To remind myself that I often find it easier to encourage others to change than to change myself, I have been using change is for other people as a mantra,
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I was planning to use my keys left for something different today, but found myself in an associative storm of tweets, possible conference sessions to be proposed and some situated software I’ve been working on for a few years, intermittently.
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For a production application I’m using PUX, a purescript wrapper around React. In the way we use it for WeReview we are experiencing performance and usability issues, beyond the slow rendering.
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Hot reloading a Halogen app with Parcel requires almost no configuration. Demo
Read More
Hot reloading a Halogen app with Parcel requires almost no configuration. Demo
Read More
Hot reloading a Halogen app with Parcel requires almost no configuration. Demo
Read More
Red-Green-Refactor is broken, because the psychological reward happens at green. When you get that reward, you feel the task has been completed, and are inclined to stop. Therefore refactoring is a lot rarer than it should be.
Read More
Red-Green-Refactor is broken, because the psychological reward happens at green. When you get that reward, you feel the task has been completed, and are inclined to stop. Therefore refactoring is a lot rarer than it should be.
Read More
To remind myself that I often find it easier to encourage others to change than to change myself, I have been using change is for other people as a mantra,
Read More
I was planning to use my keys left for something different today, but found myself in an associative storm of tweets, possible conference sessions to be proposed and some situated software I’ve been working on for a few years, intermittently.
Read More
For a production application I’m using PUX, a purescript wrapper around React. In the way we use it for WeReview we are experiencing performance and usability issues, beyond the slow rendering.
Read MoreYesterday I thought I pushed out another iteration of our attempt at making the QWAN website more accessible. Turns out I didn’t. While adjusting details, reading CSS and accessibility documentation and blogposts, I missed the fact that the shiny assets pipeline I added does not actually build on github.
Read More
The QWAN site currently is not accessible for blind users. If you were to use a screen reader, the page might just as well be blank. A blind colleague mentioned to us a while ago that they could not read the home page at all. I have just started improving it.
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In a previous post, we elaborated on why and how we apply Hexagonal Architecture in front end applications.
Read More
Front ends tend to start out simple, often as ‘just’ a form or a grid showing data that comes from a backend. It looks like ‘just’ a visual layer on top of backend APIs. When a front end evolves and grows, it inevitably becomes more complex. We then need to take a good hard look at the UX/UI and overall architecture.
Read More
Over the years, we have done our share of UI and front end development. Long long time ago with SmallTalk, Visual Basic and Delphi, building web applications with server side rendering and React, and being involved in Angular projects at several clients. Recently we have been building front ends based on Vue.js. In a series of blog posts, we are going to share how we approach (hexagonal) architecture, test driven development, and incremental design in the front end.
Read More
The QWAN site currently is not accessible for blind users. If you were to use a screen reader, the page might just as well be blank. A blind colleague mentioned to us a while ago that they could not read the home page at all. I have just started improving it.
Read More
I was wondering if Lean Agile Exchange on 10 and 11 September would be as much a Community of Need conference as e.g. Lean Agile Scotland or Agile Cambridge were. I was not disappointed.
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We are sponsoring the Lean Agile Exchange Conference happening online, 10 and 11 September (UK daytime).
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Marc and Rob are running a Hexagonal Architecture workshop this thursday at XP Days Benelux, tickets for XP Days have sold out, but apparently there is a waitlist. So who knows, you still might be able to get a ticket.
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Rob and I participated in the brand new Agile Camp NL conference, a open-space-y conference on agile. Kudos to Karlijn Moll & Thomas van Zuijlen for running the conference and creating such a nice atmosphere!
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Marc and Rob are running a Hexagonal Architecture workshop this thursday at XP Days Benelux, tickets for XP Days have sold out, but apparently there is a waitlist. So who knows, you still might be able to get a ticket.
Read More
Rob and I participated in the brand new Agile Camp NL conference, a open-space-y conference on agile. Kudos to Karlijn Moll & Thomas van Zuijlen for running the conference and creating such a nice atmosphere!
Read More
When we visit clients and discuss the architecture of their software systems, we often notice that people conflate different concerns under the term ‘architecture’. They tend to mix logical concerns with deployment concerns. Examples of logical concerns would be domain logic, domain dynamics, and how these are connected. Deployment concerns can be for instance REST APIs, components, microservices, and lambdas. The recent ‘cloud native’ movement has made this even worse, especially with serverless infrastructure concepts.
Read More
Testing a command line interface (CLI) should be just like testing a REST interface. A CLI is an adapter concern that we can test drive, separate from the business logic. In this post I’ll show an approach to test drive the command line interface of an application in Python.
Read More
In a previous post, we elaborated on why and how we apply Hexagonal Architecture in front end applications.
Read More
In this post, we will share another benefit of looking through the Hexagonal Architecture lens: it supports making decisions about the architecture of automated tests in your application landscape. It can guide you in questions like:
Read More
Front ends tend to start out simple, often as ‘just’ a form or a grid showing data that comes from a backend. It looks like ‘just’ a visual layer on top of backend APIs. When a front end evolves and grows, it inevitably becomes more complex. We then need to take a good hard look at the UX/UI and overall architecture.
Read More
Over the years, we have done our share of UI and front end development. Long long time ago with SmallTalk, Visual Basic and Delphi, building web applications with server side rendering and React, and being involved in Angular projects at several clients. Recently we have been building front ends based on Vue.js. In a series of blog posts, we are going to share how we approach (hexagonal) architecture, test driven development, and incremental design in the front end.
Read More
Hexagonal Architecture, also known as Ports and Adapters, is getting quite a bit of (well-deserved!) attention recently, especially in the Domain Driven Design community. Hexagonal Architecture is not a new thing: it was originally thought up by Alistair Cockburn (of Agile Manifesto fame) in the 90ies.
Read More
Marc and Rob are running a Hexagonal Architecture workshop this thursday at XP Days Benelux, tickets for XP Days have sold out, but apparently there is a waitlist. So who knows, you still might be able to get a ticket.
Read More
Happy new year! We are restarting open enrollment courses this year. The first one up is our test driven Java course. This will take place in Utrecht, Netherlands in March 19 and 20 in 2020.
Read More
Testing a command line interface (CLI) should be just like testing a REST interface. A CLI is an adapter concern that we can test drive, separate from the business logic. In this post I’ll show an approach to test drive the command line interface of an application in Python.
Read More
In this post, we will explain how Dimensional Planning can work by sharing a story of how we applied it in a project and how it helped us to steer the project towards delivering its desired outcomes in time.
Read More
In this post, we will share another benefit of looking through the Hexagonal Architecture lens: it supports making decisions about the architecture of automated tests in your application landscape. It can guide you in questions like:
Read More
Continuous delivery is valuable, but where do you start? At the start of a greenfield development you have no software, and if you had any software, you would not know how to put it into production.
Read More
Starting new product development with the question ‘What can we leave out?’ may seem paradoxical. We do this to start a conversation between customers and developers. As we go we develop a shared language, so that value can be delivered early and often. This is called Dimensional Planning.
Read MoreYesterday I thought I pushed out another iteration of our attempt at making the QWAN website more accessible. Turns out I didn’t. While adjusting details, reading CSS and accessibility documentation and blogposts, I missed the fact that the shiny assets pipeline I added does not actually build on github.
Read MoreWork has, once again for me, become more personal. I’m getting back into writing. This is a quick, rambling, update, so you can at least get some idea of what we are up to at the moment.
Read MoreWork has, once again for me, become more personal. I’m getting back into writing. This is a quick, rambling, update, so you can at least get some idea of what we are up to at the moment.
Read More
Continuous delivery is valuable, but where do you start? At the start of a greenfield development you have no software, and if you had any software, you would not know how to put it into production.
Read More
Over the years, we have done our share of UI and front end development. Long long time ago with SmallTalk, Visual Basic and Delphi, building web applications with server side rendering and React, and being involved in Angular projects at several clients. Recently we have been building front ends based on Vue.js. In a series of blog posts, we are going to share how we approach (hexagonal) architecture, test driven development, and incremental design in the front end.
Read More
Hexagonal Architecture, also known as Ports and Adapters, is getting quite a bit of (well-deserved!) attention recently, especially in the Domain Driven Design community. Hexagonal Architecture is not a new thing: it was originally thought up by Alistair Cockburn (of Agile Manifesto fame) in the 90ies.
Read MoreEven when it doesn’t feel like it.
Read MoreI enjoyed watching Container Solutions’ Jamie Dobson present an introduction to their pattern language for strategy yesterday, titled “A framework for strategy, making decisions in turbulent times”. I recommend viewing the recording, ‘A Pattern Language for Strategy’. Below are my main takeaways.
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A couple of days ago, Jamie Dobson and Simon Wardley did a back to back presentation on Cargo Cults and mapping DevOps and serverless. Great athmosphere in the virtual room. My son made a cameo apperance near the end. One can’t grow strategists young enough.
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We are sponsoring the Lean Agile Exchange Conference happening online, 10 and 11 September (UK daytime).
Read MoreEven when it doesn’t feel like it.
Read MoreI enjoyed watching Container Solutions’ Jamie Dobson present an introduction to their pattern language for strategy yesterday, titled “A framework for strategy, making decisions in turbulent times”. I recommend viewing the recording, ‘A Pattern Language for Strategy’. Below are my main takeaways.
Read MoreI enjoyed watching Container Solutions’ Jamie Dobson present an introduction to their pattern language for strategy yesterday, titled “A framework for strategy, making decisions in turbulent times”. I recommend viewing the recording, ‘A Pattern Language for Strategy’. Below are my main takeaways.
Read MoreEven when it doesn’t feel like it.
Read More
I was wondering if Lean Agile Exchange on 10 and 11 September would be as much a Community of Need conference as e.g. Lean Agile Scotland or Agile Cambridge were. I was not disappointed.
Read More
We are sponsoring the Lean Agile Exchange Conference happening online, 10 and 11 September (UK daytime).
Read More
I was wondering if Lean Agile Exchange on 10 and 11 September would be as much a Community of Need conference as e.g. Lean Agile Scotland or Agile Cambridge were. I was not disappointed.
Read More
We are sponsoring the Lean Agile Exchange Conference happening online, 10 and 11 September (UK daytime).
Read More
In a previous post, we elaborated on why and how we apply Hexagonal Architecture in front end applications.
Read More
In this post, we will share another benefit of looking through the Hexagonal Architecture lens: it supports making decisions about the architecture of automated tests in your application landscape. It can guide you in questions like:
Read More
Front ends tend to start out simple, often as ‘just’ a form or a grid showing data that comes from a backend. It looks like ‘just’ a visual layer on top of backend APIs. When a front end evolves and grows, it inevitably becomes more complex. We then need to take a good hard look at the UX/UI and overall architecture.
Read More
Over the years, we have done our share of UI and front end development. Long long time ago with SmallTalk, Visual Basic and Delphi, building web applications with server side rendering and React, and being involved in Angular projects at several clients. Recently we have been building front ends based on Vue.js. In a series of blog posts, we are going to share how we approach (hexagonal) architecture, test driven development, and incremental design in the front end.
Read More
Hexagonal Architecture, also known as Ports and Adapters, is getting quite a bit of (well-deserved!) attention recently, especially in the Domain Driven Design community. Hexagonal Architecture is not a new thing: it was originally thought up by Alistair Cockburn (of Agile Manifesto fame) in the 90ies.
Read More
Us three, having fallen into a conversation with code:
Read More
In this post, we will explain how Dimensional Planning can work by sharing a story of how we applied it in a project and how it helped us to steer the project towards delivering its desired outcomes in time.
Read More
Starting new product development with the question ‘What can we leave out?’ may seem paradoxical. We do this to start a conversation between customers and developers. As we go we develop a shared language, so that value can be delivered early and often. This is called Dimensional Planning.
Read More
When we visit clients and discuss the architecture of their software systems, we often notice that people conflate different concerns under the term ‘architecture’. They tend to mix logical concerns with deployment concerns. Examples of logical concerns would be domain logic, domain dynamics, and how these are connected. Deployment concerns can be for instance REST APIs, components, microservices, and lambdas. The recent ‘cloud native’ movement has made this even worse, especially with serverless infrastructure concepts.
Read More
A couple of days ago, Jamie Dobson and Simon Wardley did a back to back presentation on Cargo Cults and mapping DevOps and serverless. Great athmosphere in the virtual room. My son made a cameo apperance near the end. One can’t grow strategists young enough.
Read More
Imagine you grow a suite of automated tests that serve you well, but you are struggling to read through them. Quite a bit of repetition and boilerplate that obfuscates what is going on in individual tests. Builder is a pattern that lets our tests reveal their intent more succinctly, at the cost of making a small investment in creating a builder for our domain concept under test.
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