For the fourth year in a row, on Columbus Day weekend, I have completed the Bank of America Chicago Marathon. Previous years have culminated in mixed results, both by the clock and in my own experienc...

For a while, I have been battling with where validation should occur, and who is responsible for ensuring that the information in a command is good data. For the first layer of data validation, I am t...

Creating a patron (by which I mean, issuing a command such that some process somewhere will instantiate an actual Patron entity, and perhaps persist it in some useful manor) is all well and good, unti...

For simplicity, the PatronFactory's CreatePatron method just returned an IKeyIdentity. This was a simple interface that requires an Id of type Guid. When the creation method was always assum...

The first thing that I learned with Dependency Injection is that it encourages a mindset of "I'll figure that out that later." This allows me to put in the bare minimum for what might pass a test, eve...

There can be a lot of issues with figuring out how to identify an object, especially as I try to track it across various services, platforms, persistance strategies, and even entire systems. For a whi...

As I have been working on the Vigil project, I have been accidentally stumbling onto various patterns. I will go in search of a way to solve some particular problem, and end up losing several hours wh...