18 March, 2013. It was a Monday. Design patterns often differ only in semantics and intent. That is, the language used to describe the pattern is what sets it apart, more than an implementation of ...

1 June, 2016. It was a Wednesday. In many of my applications, the UI and API gravitate towards task-oriented UIs. Instead of “editing an invoice”, I “approve an invoice”, with specialized models, ...

In most of the projects I’ve worked on in the last several years, I’ve put in place a mediator to manage the delivery of messages to handlers. I’ve covered the motivation behind such a pattern in the ...

2 July, 2015. It was a Thursday. The talk I gave at NDC Oslo 2015 is up on SOLID architecture in slices not layers: ...

13 October, 2016. It was a Thursday. A while ago, I blogged about using MediatR to build a processing pipeline for requests in the form of commands and queries in your application. MediatR is a ...

In the last post, we looked at encapsulating the interesting part of GET actions (taking request parameters and building a model) into individual encapsulated query objects and handlers. Not ...

27 October, 2016. It was a Thursday. Early on in the CQRS/ES days, I saw a lot of questions on modeling problems with event sourcing. Specifically, trying to fit every square modeling problem into the ...

13 May, 2014. It was a Tuesday. Domain events are one of the final patterns needed to create a fully encapsulated domain model – one that fully enforces a consistency boundary and invariants. The need ...

I’d like to cover these aspects partially because these ideas play a large role in the later ideas, but also because Rob asked me to (see comments). If you’d like an in-depth discussion of these ...

5 May, 2015. It was a Tuesday. CQRS is a simple pattern – two objects for command/queries where once there was one. These days just about every system I build utilizes CQRS, as it’s a natural ...

19 March, 2012. It was a Monday. In unit tests, an IoC container rarely enters the mix. In integration tests, or more end-to-end tests, I like to use the exact same configuration for the container as ...

22 September, 2011. It was a Thursday. A long time ago, when I first started blogging with LosTechies, I wrote up a few posts on Dependency Inversion and Dependency Injection, and how I finally ...