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, ...

20 July, 2016. It was a Wednesday. Part of the release of ASP.NET Core is a new DI framework that’s completely integrated with the ASP.NET pipeline. Previous ASP.NET frameworks either had no DI or ...

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: ...

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 ...

6 June, 2015. It was a Saturday. This is my 100th post – I have to open a good bottle of wine tonight! In my last post I was presenting my thoughts about event sourcing (ES) as an architectural ...

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 ...

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 ...

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 ...

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 ...

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 ...

12 August, 2008. It was a Tuesday. A question came up on the ALT.NET message board asking whether Value Objects should be used across service boundaries. Of course, the conversation took several ...