21 August, 2008. It was a Thursday. Services are first-class citizens of the domain model. When concepts of the model would distort any Entity or Value Object, a Service is appropriate. From Evans’ ...
18 July, 2012. It was a Wednesday. Doing a deployment last night, I ran into an issue around indexing performance around SQL columns of type varchar. Varchar is the ANSI version of character data – ...
24 May, 2011. It was a Tuesday. I’ve built a few dozen security mechanisms in my career. Unfortunately, I kept getting it wrong, hence the need to keep building them. Over the years, though, I learned ...
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 ...
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 ...
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 ...
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 ...
10 October, 2013. It was a Thursday. A few years back, I put together a talk on putting your controllers on a diet using variety of techniques and extension points inside MVC. Well, a lot has changed ...
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 ...
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 ...
21 January, 2016. It was a Thursday. As I work towards the 4.2 release of AutoMapper, I got a little inspiration. Over the past year or so I’ve given some talks/podcasts about a long-lived open source ...
3 September, 2009. It was a Thursday. One of the major structural patterns encountered in DDD (and one of the most argued about) is the Repository pattern. You’ve created a persistent domain model, ...
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