Organisational Inertia - A Predictor for Success of Agile Transformations? (Part 2)

Pieter Rijken

In part 1 (Organisational Inertia - Part 1) I have focussed on the question: 'Organisational Inertia - What is it?’. This blog addresses the question ‘How do we measure it?’.

I'll start from the definition of Organisational Inertia as defined in part 1. Then connect to existing models of Organisational Inertia and the relation to Agile teams and show how the analog with Physics is used to find a measure for the 'acceleration'. Then I'll combine these elements to provide a way of measuring inertia. Finally I'll provide basic examples.

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AngularJS e2e testing using ngMockE2E

Mike Woudenberg

For our project we needed a mock http backend that we could instruct to return predefined responses so we were able to e2e test our full application without having a 'real' backend. This way we do not have to account for any state in the backend and can run our tests in isolation.


  • Reuse the mockdata object created for our unit tests
  • Reuse the config object in which we define the backend endpoints
  • Have little or no impact on the production code

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End of an era in my garage

Jan Vermeir

This weekend I was forced to throw away a cardboard box. So what, I hear you think and I agree, but it being Sunday and me being in a hazy reflective Sunday afternoon state of mind (nono, no alcohol yet) and the box being the specific cardboard box it is (or rather was), I started thinking of the box’s significance for the future.
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On quality, beauty and elegance. Parting words of a fellow Xebian

Guido Schoonheim

This week we said goodbye to a long-time colleague, Luuk Dijkhuis, senior consultant with a history in multiple Xebia units. He agreed to let me share his parting speech with you, here goes:


My dear Xebians, thank you for your kind words. Now, I could say, “thank you, it’s been six nice years, bye bye”, but you deserve more than that. I want to talk a bit about one of our key values. I will keep it short, don’t worry.

So. Quality without compromise. What kind of nonsense is that? Quality is always a compromise, or you will never get anything live, will you. So what ARE we on about?
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David Farley about Continuous Delivery

Petra Kiers

In most complex organisations, Continuous Delivery has become an essential process. Therefore Xebia wants to share its knowledge and experience in a book of Continuous Delivery. The book, written by Andrew Phillips, Michiel Sens, Adriaan de Jonge, Mark van Holsteijn, is targeted at the (IT) manager that has the challenging job to speed up the software development process within an organisation. On Thursday 13th there was a book launch with inspiring guest speakers from Kadaster, Rabobank and David Farley was the amazing final keynote speaker of the evening. Click here for the entire live presentation of David Farley.

Duration: 53:31

Promises and design patterns in AngularJS

Freek Wielstra

The traditional way to deal with asynchronous tasks in Javascript are callbacks; call a method, give it a function reference to execute once that method is done.

$.get('api/gizmo/42', function(gizmo) {
  console.log(gizmo); // or whatever

This is pretty neat, but, it has some drawbacks; for one, combining or chaining multiple asynchronous processes is tricky; it either leads to a lot of boilerplate code, or what's known as callback hell (nesting callbacks and calls in each other):

$.get('api/gizmo/42', function(gizmo) {
  $.get('api/foobars/' + gizmo, function(foobar) {
    $.get('api/barbaz/' + foobar, function(bazbar) {
      doSomethingWith(gizmo, foobar, bazbar);
    }, errorCallback);
  }, errorCallback);
}, errorCallback);

You get the idea. In Javascript however, there is an alternative to dealing with asynchronous code: Futures, although in Javascript they're often referred to as Promises. The CommonJS standards committee has released a spec that defines this API called Promises.

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PhantomJS data mining & BASH data analysis

Joshua Appelman


As a moderately large company we rent mail boxes for our employees at a hosting provider; a lot of mailboxes. These come in varying sizes, and naturally the larger you go the more expensive they become.

The other day I received an email requesting several new accounts and set upon creating these when I came across what seemed to be a rather inefficient allocation. The user had a mid-size tier, costing about €150 per year, while he could seemingly make do with the very smallest tier of about €50 annually.

This, of course, made me curious about our other allocations and I went looking for an overview of all our mail accounts' usage. No such luck. The only way to see how much of the rented space was actually being used was by navigating the - non-rest and stateful - web interface of our hosting provider and looking up the statistics for each user individually.

Challenge accepted!

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ngClass expressions in AngularJS

Arjan Wulder

AngularJSThe ngClass directive allows you to dynamically set CSS classes by databinding an expression. The documentation on is pretty clear how to write different kind of expressions but not everything is documented. I will briefly explain the documented expressions and also the one that is not documented.

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Speedy FitNesse roundtrips during development

Arnout Engelen

FitNesse is an acceptance testing framework. It allows business users, testers and developers to collaborate on executable specifications (for example in BDD style and/or implementing Specification by Example), and allows for testing both the back-end and the front-end. Aside from partly automating acceptance testing and as a tool to help build a common understanding between developers and business users, a selection of the tests from a FitNesse test suite often doubles as a regression test suite.

In contrast to unit tests, FitNesse tests should usually be focused but still test a feature in an  'end-to-end' way.  Read more

Phoney Deadlines are Deadly for Achieving Results

Pieter Rijken

Ever had deadlines that must be met causing short-term decisions to be made? Ever worked over time with your team to meet an important deadline after which the delivered product wasn’t used for a couple of weeks?

I believe we all know these examples where deadlines are imposed on the team for questionable reasons.

Yet, deadlines are part of reality and we have to deal with them. Certainly, there is business value in meeting them but they also have costs. Read more