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
Hexagonal Architecture allows us to continuously evolve a web back-end. In this post, we’ll show you how we do that. It is a continuation of a series, previous instalments demonstrated how Hexagonal architecture facilitates automated test architecture, and development of a Vue.js based front-end. In this post, we will share how we applied it in the back-end for the Online Agile Fluency Diagnostic application.
Read More
We are fans of Test Driven Development (TDD). It has served us well over the years. The TDD cycle - test, fail, run, refactor - is all about getting rich feedback fast, feedback about design decisions, about the test, about your code. We thrive on fast tests. We also want to test-drive our adapter integration and UI tests. These tend to be slow and fragile with low quality feedback, so we try to keep these minimal.
Read More
Imagine your UI and end-to-end tests could run an order of magnitude faster than they are now? Oh, you don’t have end-to-end tests, because they would be too slow and brittle? I have had that too, don’t worry. Imagine then if you could have cost-effective end-to-end tests. How would that impact your product development?
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.
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.
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Do you have pending tests left over from yesterday? Better delete them before they grow stale.
Read More
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
So you want to quickly deploy a small experiment to production. How do you do that? Dokku is one way of doing that. Here are my first impressions.
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.
Read More
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.
Read More
We are sponsoring the Lean Agile Exchange Conference happening online, 10 and 11 September (UK daytime).
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
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
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
In our previous post on Hexagonal Architecture in a back-end, we mentioned wrapping ID generation and timestamps in concepts of their own. This might feel a bit over-designed, but we have reasons to do so. In this post, we share the trade-offs and rationale behind wrapping the standard stuff in abstractions of your own.
Read More
Hexagonal Architecture allows us to continuously evolve a web back-end. In this post, we’ll show you how we do that. It is a continuation of a series, previous instalments demonstrated how Hexagonal architecture facilitates automated test architecture, and development of a Vue.js based front-end. In this post, we will share how we applied it in the back-end for the Online Agile Fluency Diagnostic application.
Read More
Deciding What To Put Where is half of the work of software development. What should I put where, in such a way that me and my colleagues will be able to find it back later? Finding a good place for things in code greatly helps or hinders maintainability of the code later on.
Read More
So you want to quickly deploy a small experiment to production. How do you do that? Dokku is one way of doing that. Here are my first impressions.
Read More
Imagine your UI and end-to-end tests could run an order of magnitude faster than they are now? Oh, you don’t have end-to-end tests, because they would be too slow and brittle? I have had that too, don’t worry. Imagine then if you could have cost-effective end-to-end tests. How would that impact your product development?
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
We are fans of Test Driven Development (TDD). It has served us well over the years. The TDD cycle - test, fail, run, refactor - is all about getting rich feedback fast, feedback about design decisions, about the test, about your code. We thrive on fast tests. We also want to test-drive our adapter integration and UI tests. These tend to be slow and fragile with low quality feedback, so we try to keep these minimal.
Read More
In this next post in our series on Dimensional Planning, we will share how we applied Dimensional Planning to the Online Agile Fluency® Diagnostic application we have been working on since spring.
Read More
In a previous post, we introduced the Dimensional Planning technique, and shared how we used this for a product we worked on. In this post, we will go more in depth and show how you can use the roads metaphor not only for releases of a product, but for individual features as well. This provides a fine-grained mechanism for planning and delivering small, valuable increments.
Read More
So you want to quickly deploy a small experiment to production. How do you do that? Dokku is one way of doing that. Here are my first impressions.
Read More
Are you regularly holding retrospectives, but they do not result in improvements? In this post we will highlight how a team can move to a virtuous cycle of continuous improvement.
Read More
Imagine your UI and end-to-end tests could run an order of magnitude faster than they are now? Oh, you don’t have end-to-end tests, because they would be too slow and brittle? I have had that too, don’t worry. Imagine then if you could have cost-effective end-to-end tests. How would that impact your product development?
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
Hexagonal Architecture allows us to continuously evolve a web back-end. In this post, we’ll show you how we do that. It is a continuation of a series, previous instalments demonstrated how Hexagonal architecture facilitates automated test architecture, and development of a Vue.js based front-end. In this post, we will share how we applied it in the back-end for the Online Agile Fluency Diagnostic application.
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.
Read More
Upaated 21 november 2020, added some more notes on Simon Wardleys segment.
Read More
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
Hexagonal Architecture allows us to continuously evolve a web back-end. In this post, we’ll show you how we do that. It is a continuation of a series, previous instalments demonstrated how Hexagonal architecture facilitates automated test architecture, and development of a Vue.js based front-end. In this post, we will share how we applied it in the back-end for the Online Agile Fluency Diagnostic application.
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 next post in our series on Dimensional Planning, we will share how we applied Dimensional Planning to the Online Agile Fluency® Diagnostic application we have been working on since spring.
Read More
In a previous post, we introduced the Dimensional Planning technique, and shared how we used this for a product we worked on. In this post, we will go more in depth and show how you can use the roads metaphor not only for releases of a product, but for individual features as well. This provides a fine-grained mechanism for planning and delivering small, valuable increments.
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
Upaated 21 november 2020, added some more notes on Simon Wardleys segment.
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.
Read More
We are fans of Test Driven Development (TDD). It has served us well over the years. The TDD cycle - test, fail, run, refactor - is all about getting rich feedback fast, feedback about design decisions, about the test, about your code. We thrive on fast tests. We also want to test-drive our adapter integration and UI tests. These tend to be slow and fragile with low quality feedback, so we try to keep these minimal.
Read More
Are you regularly holding retrospectives, but they do not result in improvements? In this post we will highlight how a team can move to a virtuous cycle of continuous improvement.
Read More
Imagine your UI and end-to-end tests could run an order of magnitude faster than they are now? Oh, you don’t have end-to-end tests, because they would be too slow and brittle? I have had that too, don’t worry. Imagine then if you could have cost-effective end-to-end tests. How would that impact your product development?
Read More
Are you regularly holding retrospectives, but they do not result in improvements? In this post we will highlight how a team can move to a virtuous cycle of continuous improvement.
Read More
Are you regularly holding retrospectives, but they do not result in improvements? In this post we will highlight how a team can move to a virtuous cycle of continuous improvement.
Read More
In our previous post on Hexagonal Architecture in a back-end, we mentioned wrapping ID generation and timestamps in concepts of their own. This might feel a bit over-designed, but we have reasons to do so. In this post, we share the trade-offs and rationale behind wrapping the standard stuff in abstractions of your own.
Read More
Deciding What To Put Where is half of the work of software development. What should I put where, in such a way that me and my colleagues will be able to find it back later? Finding a good place for things in code greatly helps or hinders maintainability of the code later on.
Read More
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