Every Architecture Design decision should be based on one or more Non-Functional requirements. Each Non-Functional requirement in its case should be based on a business need. Recently I asked myself what are the business needs for using a dependency injection (DI) framework? Which visible, tangible benefit would be reached using a DI framework? This blog post describes the arguments we used to successfully convince management. Dependency...

This article explains a method to secure a REST based service using basic authentication. The service itself is implemented using Microsoft Windows Communication Foundation. The authentication of the credentials should be possible against any type of back-end. For example authenticate against active directory, custom file or a database. Default, Basic Authentication is possible in combination with WCF and IIS, authentication is only possible...

Recently two colleagues and I did a workshop in which we explained SOLID Software development. SOLID is an acronym that stand for five principles for object-oriented development. SOLID stands for Single Responsibility, Open Closed, Liskov Substitution, Interface Segregation and the Dependency Inversion Principle. These principles can help a software developer manage dependencies between software components. Bob Martin the author of the...

I talked about the importance of Non-functional requirements in my earlier post “Non-functional requirements define a Software Architecture”. What I did not describe was how you can discover the Non-functional requirements? My preferred method when it comes to requirements gathering, functional or Non-functional, is through interactive workshops. During these workshops you facilitate the requirements gathering using interactive methods. I...

The sidebar of this page shows the LetsGrow.com WordPress Weather plug-in. This WordPress plug-in shows a map of the Netherlands together with real-time temperature and radiation data. The plug-in retrieves the data directly from LetsGrow.com using LetsGrow Services. LetsGrow Services is a module that enables customers or partners of LetsGrow.com to develop third-party applications that use the data from the LetsGrow platform. The...