As suggested by its name, Domain-Driven Design is not only about Event Sourcing and CQRS. It all starts with the domain and a lot of key insights that are too easy to overlook at first. Even if you’ve read the « blue book » already, I suggest you read it again as the book is at the [...]
Big battles are won on small details
déc 17th, 2009
Small details matter because you deal with them often. Any enhancement you make thus yields a benefit often, hence a bigger overall benefit. In other words: invest small care, get big return. This is an irresistible proposal! Examples of small design-level details that I care about because I have experienced great payback from them: Using [...]
Degrees of freedom analysis
déc 1st, 2009
The concept of degrees of freedom looks so relevant to software development that I am wondering why it is not considered more often. Fortunately Michael L. Perry dedicates a full section of his blog to that concept. In this post I will quote a lot, please consider that as a sign of enthusiasm. A common [...]
Many concepts look obvious because they are used often, not because they are really simple. Small quantities that we encounter all the time in most projects, such as date, time, price, quantity of items, a min and a max… hardly are a subject of interest from developers « as it is obvious that we can represent [...]
How I became enthusiastic about patterns
oct 1st, 2009
In my very first job, I was doing R&D, working on a map-matching algorithm. The goal of this algorithm was to pinpoint a moving car on a vector map, based on the data from various sensors, including a GPS, an electronic compass and the car odometer. Such algorithm was essential for the business of the [...]
Manipulating things collectively
sept 10th, 2009
There is great power in being able to manipulate collective things as one single thing. It gives you simplicity, hence control. You can focus your attention on it and reason about it, even though behind the hood it is made of many parts. The composite thing is kept simple, therefore you can also deal with [...]
Patterns as another kind of types
sept 3rd, 2009
Patterns represent a couple (intent, solution), where the intent matters most. Based on that intents, that can be generic or specialized, I propose to consider patterns like types in languages with strong typing, for the compiler to enforce their constraints. Declaring patterns: what for? Consider the very simple Quantity pattern from Analysis Patterns (Fowler): Represent [...]
Software design as a matter of economy
jan 5th, 2009
Economy is the management of limited resources. In software development the limited resources (*) are: memory of the developer: names of types, methods signatures, tricks to know time available to learn or discover new things Therefore, every design decision should attempt to reach an optimal balance between both memory and time being consumed in the [...]
Sharing a common architecture or vision within a team
jan 21st, 2008
What do you think about when you hear the word « architecture » about software? Fowler defines it: whoNeedsArchitect « In most successful software projects, the expert developers working on that project have a shared understanding of the design system design. This shared understanding is called ‘architecture.’ ». However for most people the word « architecture » comes full of middleware [...]
Software development is more than mastering syntax
juin 28th, 2005
When a junior developer joins our team, it is interesting to realize how mastering language syntax and API is just a small part of the skills that matter. Just after the syntax and API knowledge (actually knowing where to find what you want in the API is enough), there are a few other skills you [...]
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All original material of whatever nature created by Cyrille Martraire and included in this weblog and any related page, including the weblog's archive, is licensed under a Creative Commons License.
