Op 11 nov kun je vanaf 16:30 bij Sopra Steria live the lancering van .NET 10 bijwonen gevolgd door een panel met Henry Been, @codewithanjuli.bsky.social, Beatriz del Saz, Selmir Aljic en ik. Ook praat @hexmaster.nl ons bij over #Aspire. Inclusief eten. Inschrijven op www.meetup.com/nl-NL/future...

I've just released PackageGuard 2.0, my little open-source tool for keeping grip on your open-source packages, that adds support for NPM, PNPM and Yarn package.json files. Try it out and let me know if you find anything that needs improving at github.com/dennisdoomen...

This week, I'll go on stage at the DevOps track of DevCon 2025 in Bucharest, Romania. This time I'll talk about Boundary-Driven Development, my term for thoroughly understanding and adjusting the internal boundaries of your codebase to optimize maintainability. Find me on Thursday at 14:00.

Grateful to speak at @techorama.bsky.social—the biggest & coolest #Benelux conference! Shared 40+ ways to reduce complexity & coupling with a packed 8:30 crowd. Massive thanks to the amazing team & community. If you weren’t there—fix that next year!

Tomorrow at 8:30, I'll be kicking off the second day of @techorama.bsky.social with 40 tips & tricks to keep your C# code base in check. Then, at 11:15, I'll join #TechoramaTV to talk about the topic of development. Will I see you there? techorama.nl/speakers/spe...

✈️ Last week, I attended the second edition of the @hellostavanger.no conference in the beautiful seaside town of #Stavanger, Norway. As this conference is organized by speakers, it means it ran smooth as oil and addresses everything speakers run into at other conferences.

Fluent Assertions 8.8 was released yesterday. Check out the details at xceed.com/blog/all/flu...

Yeah. We finally have threads in @microsoftteams.bsky.social. Happy to see that the product team has been learning from Slack after all.

Last weekend, I shipped release 1.7 of Pathy, a tiny library for fluently building and using paths without binary dependencies. It comes with two improvements. 1. Preventing the debugger from stepping in Pathy's code 2. Using the .. syntax for representing a parent path

I watched "Tron: Ares" in IMAX 3D last night. Not the best story every written, but definitely an absolutely amazing experience I've never had before in a cinema. Do yourself a favor and find a cinema with true 4K lasers and an IMAX 3D screening.

Suppose you want some kind of non-intrusive time tracking for developers to see how much time is spend on features (on a high-level), what would you recommend? It should give sufficient info for managers without infuriating the dev teams.

For the past 15 years, I've been the author of Fluent Assertions, an open-source project with over half a billion downloads. In January, we made the decision to commercialize it—a move I still stand by, but one that didn’t come without controversy. This gave me renewed...

During the weekend, I've shipped a small increment to Pathy, a no-dependencies library for fluently building paths and working with files and directories. Version 1.6 adds a bunch of nice improvements that I needed myself ;-) * LastWriteTimeUtc property to ChainablePath...

A conference in #BosniaAndHerzegovina? Honestly, I didn’t know what to expect when I headed to #InitConf. But the moment I arrived, I was blown away — the venue was stunning, with its distinctive halls right in the heart of #BanjaLuka. I’d read about #Bosnian hospitality on Wikipedia...

I really don't get how organizations that primarily use SharePoint, Teams and OneDrive can provide a searchable and discoverable platform for functional reqs, tech docs, blogs, work breakdowns, architecture decision logs, plans and meeting notes.

A minor update on my open-source work during September and October 🧑‍💻 Adding NPM, Yarn and PNPM support to PackageGuard 📝 Started designing Mockly.Http, a new HTTP mocking library that solves all my issues existing libraries ☑️ Shipped a bugfix release for Fluent Assertions 8.7

Can't wait to travel to Banja Luka and share my experiences from practicing (and making many mistakes) during 15 years of unit testing and Test-Driven Development. Check out the schedule at initconf.org

Curious about what’s coming to Rider in the next updates and the upcoming major release? blog.jetbrains.com/dotnet/2025/...

My OSS plans for the coming weeks (in order): 1. Finalizing work for FluentAssertions 8.8 2. Handle contributed PRs on FluentAssertions.Json 3. NPM support for PackageGuard 4. Improvements on my .NET Library Starter Kit

📰Fluent Assertions 8.7 is out with extensive support for the JSON classes from the System.Text.Json namespace. 🔧 Not only did we add a lot of APIs for running assertions on JsonNode and JsonArray, you can also compare deeply nested JSON to an anonymous type using Should().BeEquivalentT().

900 kilometers of German autobahn, lots of coffee and two speaker dinners was what it took to attend my second BASTA! conference and share my ideas on keeping your architecture and code in check as well as building well-documented and versioned HTTP APIs.

These are the kind of changes I completely rely on @jetbrains Junie for

It's going to be a couple of busy months...

Really impressed with @jetbrains Junie and Sonnet 4. I used the following prompt to refactor a large sequential class into a version of the Strategy Pattern. What kind of cool examples do you have while using AI tools during coding?

Just finished the slides for next week's talk on building well-documented versioned HTTP APIs in .NET. I'll cover a lot of ground and use a lot of demos to show you the following aspects of responsible design. ✅ What are important elements of a good HTTP API (cont'd)

Just a couple of days and then it's time to share my ideas on how understanding the internal boundaries of your codebase will make a lot of complexity such as the technical design, duplication, unit testing and dependency injection a lot simpler to deal with. See also basta.net/microservice...

Visual Studio 2026 Insiders is here! devblogs.microsoft.com/visualstudio... I guess it's time to update the comparison with its biggest competitor.

A lot has been said and written about that hype called #AI. It’s amazing, it’s bad, it’s dangerous — all depending on who you ask. Personally, I see it as just another tool. Granted, it’s a very smart tool, but a tool nonetheless. At least, for now… (cont’d)

If you're using github.com/VerifyTests/..., e.g. to protect your library's public API, also check out plugins.jetbrains.com/plugin/17240... created by Mathias Koch.

The beauty of preparing a technical .NET presentation, is that it forces you to thoroughly understand the intricacies of the given technology and becomes a learning experience by itself.

Anybody has any good experience using a commercial or open-source workflow engine in .NET. We're looking at www.inngest.com, but are open to alternatives.

🪪 @dennisdoomen.com is a Microsoft MVP and Principal Consultant at Dutch Microsoft consultancy firm Aviva Solutions. With 27 years of experience under his belt as a software architect and/or lead developer.

🎙️ Speaking at BASTA! Conference Mainz 2025! 📅Sept 22–26, 2025 📍 Mainz 🧠Topics: Boundary-Driven Development, Versioned HTTP APIs 🎟️10% off → code bas-dennis 🔗https://basta.net/mainz/tickets-mainz/?go=ok #BASTA #DotNet #CSharp #SoftwareArchitecture #BASTAConference #APIDevelopment

Pretty cool to see how @JetBrainsRider auto-completes an HTTP request using the routes registered in my solution.

I wish that Microsoft thought a bit harder about testing Azure Service Bus applications so that you can create in-memory tests without having to rely on containers.

During that same weekend, I also shipped a new version of my .NET Library Starter Kit. 1.5 includes the following improvements: (cont'd)

During the weekend, I've released version 1.5 of Pathy, a tiny open-source package for fluently building and using file and directory paths without binary dependencies. (cont'd)

My schedule for the rest of the year just got a bit fuller. Will I see you somewhere at one of those conferences?

During the weekend, I've released version 1.6 of PackageGuard, a fully open-source tool to scan the NuGet dependencies of your .NET solutions to control the open-source licenses that you want to allow or certain versions of certain packages you want to enforce or avoid. (cont'd)

We've just released Fluent Assertions 8.6 that introduces a new capability that we like to call "inline assertions". Check out the examples below or look for the release notes at www.fluentassertions.com

And here's another small release of Pathy, a tiny library for fluently building and using file and directory paths without binary NuGet dependencies. Version 1.4 ships with two nice quality-of-life features that I needed myself in another project. Check it out at github.com/dennisdoomen...

Finished the fifth book in the "Stormlight Archive". Now I have to wait years for the next 5 books to arrive. How am I going to fill this void? Any recommendations?

We’ve all been there — staring at a wall of log entries in Azure App Insights or your local console, trying to make sense of a flood of warnings, errors, and stack traces that lead… nowhere. You dig, you filter, you search, but instead of answers, you find noise. (cont’d)

PackageGuard 1.5 includes a couple of new features as well as bug fixes. - Support for .slnx format - Allow denying prerelease packages - Display the version in output log - Fix license detection of NUnit and NETStandard.Library Read more about PackageGuard at github.com/dennisdoomen...

The second half of 2025 promises to as exciting as the first half was. Can't wait to engage with the developer community all over Europe.

When building HTTP APIs, clarity is everything. Developers rely on status codes not just to confirm success, but to understand what went wrong—and what to do next. If your API can’t communicate that cleanly, you’re not just confusing clients—you’re slowing everyone down. (cont'd)

What's the most satisfying (>2000 piece) #lego set you've built recently? I'm looking for something after I finally finish the Ferrari Daytona.

I've you've been using the JetBrains Annotations NuGet package to give hints to Rider on how code is used inside and outside your codebase, there's a source-only version of that package that will help avoiding the dependency hell. See www.nuget.org/packages/Jet...

Copilot autonomously providing a GitHub pull request for a feature or issue in my open-source projects is truly amazing to see. github.com/dennisdoomen...

Last weekend, I've pushed a small improvement to Pathy, a small open-source project for fluently building and using file and directory paths without binary dependencies. Check out the read-me at github.com/dennisdoomen...