Shifting MOSA to the left

Shifting MOSA (Modular Open Systems Approach) to the left

Thursday, February 17, 2022

The weapons systems world is changing. The technology is improving rapidly, requirements for performance are increasing and weapons systems are often required to have 30-50 year service lifetimes. The DoD believes an open systems approach can help. An open system approach considers how a system will be supported throughout its lifecycle at the beginning of …

Simplicity is not the Solution to Software Complexity

Thursday, February 10, 2022

Software just keeps getting more complex. As it gets more complex, it becomes harder to maintain. Fixing bugs begins to feel like exchanging old bugs for new ones. There is a clamor to simplify the code. But is simplification the answer? And, what does simplification mean? A software system is composed of interrelated elements each …

Modularity as a Portfolio of Options

Thursday, October 07, 2021

I have been exploring the use of financial analogies with regard to programming and design. Ward Cunningham’s Technical Debt metaphor has become well known. Prior to writing this blog entry, I looked a little deeper into Ward’s metaphor and discovered that it has been interpreted and extended in multiple ways. Since this is my view of the …

software modularity

Modularity Parable and Software

Thursday, November 26, 2020

In his seminal book, The Sciences of the Artificial, Herb Simon describes the parable of watchmakers named Hora and Tempus. They built watches out of 1000 parts. The watches were of the highest quality – as a result, they were often interrupted by customers calling up to place orders. However, they built watches using different techniques. Tempus …

modular architecture

Modularity and Agile Architecture

Thursday, August 20, 2020

What is Agile Architecture? Architecture is an important aspect of agile software development efforts. It is critical to scaling agile to meet the needs of the business. “Agile architecture is a set of values and practices that support the active evolution of the design of a system, concurrent with the implementation of new business functionality”. The …

software architecture

DevOps and Testing Software Architecture

Thursday, March 05, 2020

Forbes Magazine famously wrote that “Every Company is a Software Company.” Your company must become more responsive and agile using software and technology. And if the software doesn’t work or gives customers a bad experience, it can lead to lost revenue. This has led to the DevOps phenomenon, which is speeding up deployment of software …

Automate API testing

Reasons NOT to Refactor your code

Thursday, February 20, 2020

Last week I wrote about the reasons to refactor code. Let us now look at some reasons why you shouldn’t refactor code. When dealing with legacy code there will always be a temptation to refactor the code to improve its understand-ability or performance. However, here are some reasons why it might be better to hold off: 1. …

Static Analysis tool CodeSonar

Four Reasons to Refactor your Code

Thursday, February 13, 2020

1. Maintenance is easier Legacy code architecture erodes over time and becomes difficult to maintain. Legacy code bugs are harder to find and fix. Testing any changes in legacy code takes longer. Even small changes can inadvertently break the application because over time the design has been extended to accommodate new features and the code …

android smartphone screen

Android Modularization

Wednesday, January 29, 2020

Out of the box, Android Studio provides one module: the app module. Because of this, most developers write their entire application in this one module. This is fine for small teams and small applications. But, as an application grows, more team members are added and the application becomes more complex, build times can increase – …

Motivation for Software Architecture Refactoring

Wednesday, January 15, 2020

Refactoring is commonly applied to code, but refactoring can also be applied to other development artifacts like databases, UML models, and software architecture. Refactoring software architecture is particularly relevant because during development the architecture is constantly changing (sometimes for the worse; see our blog post on Architectural Erosion) and expanding. Software architecture refactoring should happen regularly …