This post describes a common problem: how to deal with multiple domain events if raising of one of them must negate the others.
CQRS and exception handling
This is the last article in the series of articles designed to supplement my CQRS in Practice course. In it, I’d like to discuss one particular aspect of exception handling relevant to CQRS and the decorator pattern.
When to validate commands in CQRS?
I’m continuing the series about CQRS to supplement my recent CQRS in Practice course. There’s a question that I didn’t cover in the course and that was raised at least twice since then: when to validate commands in CQRS?
Are CQRS commands part of the domain model?
I published an online course about CQRS a couple months ago, and since then I realized that there are some topics I didn’t put enough emphasize on in that course, or didn’t cover at all. In the next several blog posts, I’m going to fill this gap.
This article is about CQRS commands and whether they are part of the domain model.
Hierarchy of value objects
This article is a response to a reader’s question. The question posed an interesting problem that I think will be interesting to a wider audience.
CQRS vs Specification pattern
This is an article about how two DDD patterns contradict each other.
New online course: CQRS in Practice
My new online training course CQRS in Practice went live.
In Defense of Lazy Loading
In this article, we’ll talk about ORMs and lazy loading.
Entity Identity vs Database Primary Key
Today, we’ll discuss the difference between identity in the DDD sense and database primary keys. We often mix the two together but are they really the same thing?
EF Core 2.1 vs NHibernate 5.1: DDD perspective
That was probably a long wait for those of you who follow my blog. But, better late than never, so here it is: another comparison of Entity Framework and NHibernate, in which I bash EF Core and present it as an unbiased review. Just kidding, I do try to be unbiased here to the best of my skills.
This article renders the previous ones obsolete (which they already were at this point anyway).