Dennis Doomen

We are halfway on our way to the summer, but the coming months will be pretty busy. Hope to see you at one of those conferences soon.

A couple of weeks ago, Patrick Akil invited me back at his #BeyondCoding podcast. We spend almost an hour talking about breaking down technical debt, being a coding architect, open-source development and the impact of AI on our profession. Check it out at youtube.com/watch?v=Z4MUDo…

In case you missed it, last night we shipped a bunch of new features and improvements through Fluent Assertions 8.9.0 _and_ backported some bugfixes released as 7.2.2. Check out the release notes at github.com/fluentassertio…

Oh, and did you know we just shipped 1.4 of Mockly. See github.com/dennisdoomen/m… for the release notes.

If the built-in request body matching isn't enough, hashtag#Mockly also supports providing your own code to implement more advanced request body matching algorithms. Check out the documentation at #custom-matchers" target="_blank" rel="nofollow noopener">mockly.org/docs/advanced#…

We’re experimenting with a different UX using AI in @jetbrains IDEs. Most AI features wait for a prompt or a trigger action. Instead, we are exploring a different direction: AI that automatically surfaces helpful context. We’ve just released an experimental plugin with two such features. Details in the thread 🧵

This will be interesting 😯 blog.jetbrains.com/junie/2026/03/…

Junie ranked top on SWERebench using Gemini 3 Flash, spending ~10x fewer tokens than other agents while maintaining high performance. We’re offering free access to Gemini 3 Flash for one week, until next Monday. Try it out and let us know what you think: jb.gg/ecer6x

Mockly 1.4 was also released last night and adds a nice overload for WithBody and allows you to override te JSON serialization options. See github.com/dennisdoomen/m…

Mockly, the new in-memory .NET HTTP mocking kid on the block also supports limiting the number of times a mocked request will respond. This is great for more complex scenarios. Read more about it at #limiting-mock-invocations" target="_blank" rel="nofollow noopener">mockly.org/docs/advanced#…

Air just launched. This week we’re highlighting some key features. No single agent is best at everything. Air lets you easily switch between Codex, Claude Agent, Gemini CLI, and Junie, so you can choose the right agent for each task. Try Air for free: jb.gg/4dhmrw

If you're at any of those conferences, I'd love to hear about your experiences too.

Occasionally, when I mention that I'm (sometimes) allowed to talk about my biggest passions at conferences and events, people tend to ask me about the topics I cover. Well, as you can see, I like to cover a lot of different parts of my profession.

@marcjacobi That one is missing.

@ddoomen Trice()? 🤪

I've shipped a minor update of Reflectify, a content-only NuGet package that makes it more fun to get information from your .NET types. Check out the release notes at github.com/dennisdoomen/r…

Mockly 1.3 was released recently in an attempt to make the failure messages even more self-describing. It will now make it more obvious if your HTTP mock wasn't expecting a query string and the actual request was. Check out the release at github.com/dennisdoomen/m…

On Debugging Problems jeremydmiller.com/2026/02/24/on-… Look world, I can still blog about something w/o it being self promotion!

🛠️ Rider 2025.3.3 is now available. The build comes with a few major bug fixes. You can download the update from our website here: jetbrains.com/rider/download/

For projects on Azure DevOps, this is what I do to avoid bothering my team members with a code review that still contains obvious and non-trivial mistakes. I haven't figured out which one is better; @jetbrains.com Junie or #Claude.

Mockly, my new .NET HTTP mocking library has its own website now. Check it out at mockly.org