ddd
-
From human decisions, to suggestions to automated decisions
I've been wanting to share this experience for a while, but it took me a while to come up with a story and example I cou... -
My InfoQ interview on DDD, events and legacy
Seems that it's impossible to beat the Gaussian curve of blogging frequency. On the other hand, I spent quite some of my... -
Notifications from an event log
User notifications are a feature that came as an afterthought, but turned out to be rather easy to implement - without t... -
Visualizing event streams
In my recent talk on [Evil by Design](http://www.jefclaes.be/2015/11/slides-from-my-talk-evil-by-design-at.html), I show... -
Slides from my talk "Evil by Design" at Build Stuff
Third time attending Build Stuff, first time doing a talk. I'm happy that it's out of the way and can now just enjoy the... -
Defining big wins
Casinos invest a lot of energy selling the dream. One way to do this is by showing off people winning big in your casino... -
Basic casino math
In a previous series of posts, I went over the models used by casinos to spin a wheel ([spinning](http://www.jefclaes.be... -
Scaling promotion codes
In our system a backoffice user can issue a promotion code for users to redeem. Redeeming a promotion code, a user recei... -
Domain Language: The Playthrough Bonus
Since online gambling has been regulated in Belgium, basically each eligible license holder has complemented their land ... -
Spinning the wheel: clustering and near misses
The previous post showed a simple model casinos use to manipulate the odds. Instead of relying on the physical wheel for... -
Spinning the wheel: manipulating the odds
The previous post defined a basic set of data structures and functions to spin a wheel of fortune in F\#. There was... -
Spinning the wheel
In this post, I'll define a basic set of data structures and functions to spin a wheel of fortune. In the next post, I'l... -
Hot aggregate detection using F#
Last week, I wrote about [splitting a hot aggregate](http://www.jefclaes.be/2014/11/splitting-hot-aggregates.html). Disc... -
Splitting hot aggregates
When you visit a real casino, the constant busy-ness is overwhelming; players spamming buttons, pulling levers, spinning... -
Thinking No Computers
The other day I happened to see a curious exchange in one of our businesses. The cashier swapped a torn, but carefully r... -
Not about the UI and the database
When you ask an outsider which components an average application consists of, he will most likely be able to identify th... -
NCrafts Eventstorming slides
Me and [Tom](https://twitter.com/tojans) just finished doing our Event storming workshop at [NCrafts Paris](http://ncraf... -
Alternatives to Udi's domain events
Almost four years ago [Udi Dahan introduced an elegant technique](http://www.udidahan.com/2009/06/14/domain-events-salva... -
Strategic DDD in a nutshell
There are two big parts to Domain Driven Design; strategy and tactics. Strategy helps setting out a high-level grand des... -
Repositories, where did we go wrong?
In essence, repositories are a simple abstraction over aggregate storage. A repository will insert, update, delete or fe... -
An event sourced aggregate
Last week I shared [my theoretical understanding of event sourcing](http://www.jefclaes.be/2013/10/my-understanding-of-e... -
My understanding of event sourcing
I've been studying event sourcing from a distance for little over a year now; reading online material and going through ... -
Eventual consistent domain events with RavenDB and IronMQ
Working on side projects, I often find myself using [RavenDB](http://ravendb.net/) for storage and [IronMQ](http://www.i... -
When your commands spell CUD
A good while ago, I blogged on commands (and queries). After exploring various flavors, I eventually settled on this one... -
Multiplayer Enterprise Architect
Hanging around in the pub after DDDX, I ended up talking to [Alberto Brandolini](https://twitter.com/ziobrando). For tho... -
Accidental entities - what about the UI?
This post is a follow-up to my previous blog post "[Accidental entities - you don't need that identity](http://www.jefcl... -
Accidental entities - you don't need that identity
An entity is identified by an identifier, while value objects are identified by their value. If I make a living ren... -
IDDD Tour notes (2/2)
This is the second and last part of my notes I scribbled down attending the IDDD Tour. [The first part](http://www.jefcl... -
IDDD Tour notes (1/2)
Two weeks ago I got to spend four days attending the [IDDD Tour](http://idddtour.com/) by [Vaughn Vernon](https://twitte...