.NET Rocks!

The Critter Stack is growing! Carl and Richard talk with Jeremy Miller about the latest Critter Stack updates, including Marten, Wolverine, and more! First up is the stack's expansion with Polecat and Fisher, versions of Marten built for SQL Server 2025 and SQLite, respectively. Jeremy also talks about the evolution of event sourcing and how the framework continues to advance to take advantage of...

What happens to your digital assets after you pass away? Carl and Richard talk with Mattias Karlsson about his experience navigating the challenges of losing a friend and having to reorganize their digital assets. There are the immediate issues around access to email, authenticators, and the like, but also the long-term items like GitHub maintainer roles. Mattias talks about looking through your p...

How about a cloud-native AI assistant? That's RockBot! Carl and Richard talk with Rocky Lhotka about RockBot, Rocky's own variant of the OpenClaw/Hermes type personal assistant. Rocky talks about being uncomfortable with the security approaches the other agents have taken, so he went full enterprise architect on the problem and built RockBot as a set of containers behind the Kubernetes orchestrato...

Whether quantum computers are around the corner or not, the message is clear: the time for post-quantum cryptography is coming fast. Carl and Richard talk to Michael Howard about Microsoft's efforts to make post-quantum cryptography available to everyone by 2029. Howard discusses the quantum computing and cryptography issue, specifically the ability of quantum computers to run Shor's algorithm qui...

So what can numerics do for you? Carl and Richard talk to Jeffrey Sax about his work building Numerics. NET, a collection of general-purpose mathematical and statistical classes built for .NET. Jeffrey explains that numbers in a computer differ from real numbers in the world; for storage and computational efficiency, typical variable types in any programming language have limits on precision and s...

How can constraints make software development assistants more efficient? Carl and Richard talk to Don Demcsak about his work on getting LLMs to build higher-quality software with fewer resources. Don talks about how domain-driven language techniques help to define and constrain language around a given application problem space, but that largely hasn't been applied to coding agents so far. And as p...

Ready for a rant? Carl and Richard talk to Billy Hollis about the impact of artificial intelligence on software development. The conversation starts with a listener comment about going all-in on AI to speed up development radically, which raises the question of how much AI is the right amount. What's safe and what is reckless? And how will that position change over time? Are the problems we're hav...

What's the best way to interact with an LLM in applications? Carl and Richard talk to Chad Michel about the evolving user interface to large language models. Chad recalls Build 2023, where Technical Fellow Steven Batiche talked about LLMs starting out beside your application (like Copilot), but eventually moving inside, like Claude Cowork. Then Steven suggested that the ultimate destination is out...

What can OpenClaw do for you? Carl and Richard talk to David Guttman about his work on OpenClaw, and helping others be successful with it. OpenClaw was one of the first personal agents released and has continued to evolve with the industry. David talks about controlling access to OpenClaw, and controlling what OpenClaw has access to. The challenge is managing prompt injection, and the agent can be...

What's Shawn been up to lately? Carl and Richard chat with Shawn Wildermuth about his work in the Netherlands. Shawn talks about his last show on being a senior developer - and how much that has changed in the past two years. The role of large language models in software development has changed careers, but they're still fun. The conversation also dives into the role of Aspire to utilize the best...

Identity is hard, and getting harder! Carl and Richard talk to Michele Bustamante about the evolution of authentication and authorization in the current landscape. Michele talks about finding apps at clients that are still using older authentication strategies that are no longer secure - or are implemented incorrectly, so they were never secure! The conversation covers the array of tools available...

Last year Jimmy Bogard released commercial licensed versions of AutoMapper and Mediatr - how's it going? Carl and Richard chat with Jimmy about the decision to go commercial and what he's learned after a year. Making customer transactions is part of the process for sure, as is a new array of issues and ideas. But for the most part, Jimmy says it was the right decision and has been a good experienc...

How has testing changed in the era of AI? Carl and Richard talk to Debbie O'Brien in her new role at Zephyr about using LLMs to help build and validate tests - and much more. Debbie talks about joining Zephyr and using testing tools like Playwright to validate application workflows and generate documentation. This leads to a discussion about documentation being more important than ever, since LLMs...

The Open Source Maintenance Fee is more than a year old now - how are things going? Carl and Richard catch up with Rob Mensching to discuss the OSMF and its success in supporting Rob's WiX Toolset project. Rob talks about the key aspect of the OSMF - making it part of the licensing, so that it isn't optional. Of course, you can download the source from GitHub and compile it yourself without violat...

Have you checked out Azure Container Apps lately? Carl and Richard talk to Paul Yuknewicz and Jan Kalis about how they have sped up startup time with Container Apps using a feature called Express, and then on to the big news - Sandboxes. Sandboxes let you experiment with Azure Container Apps with managed identity to access Azure Connectors to all sorts of resources, both within Azure and outside i...

DNSimple has a CLI! Carl and Richard talk to DNSimple CEO Anthony Eden about the evolution of the DNSimple CLI in today's software market. DNSimple provides DNS, domain registrar, and certificate services - so why does it need a CLI? Anthony talks about earlier experiments with CLIs for folks who didn't want to use the web interface. But today, large language models change the game and work best w...

Do data centers in space make any sense? Time for a rare summer-time Geek Out! Richard chats with Carl about all the hype surrounding building orbital data centers for AI workloads. Richard points out that enthusiasm for this idea surged in the fall of 2025, when the backlash against ground data centers peaked. But could you actually make the orbital data centers work? The conversation works throu...

Can tooling make event sourcing implementations easier? Carl and Richard talk to Einar Ingebrigsten about his work on cratis.io - a set of open-source tools for implementing event sourcing in your application. Einar discusses the foundational elements of event sourcing and the common implementation patterns he developed at Cratis. With extensive support for .NET, Cratis provides tooling for data s...

Is it time to build your own agent harness? Carl and Richard talk to Emmz Rendle about her work on Daemonic AI, which gives you more control over which models and tooling you use to build software with agents. Emmz talks about the upcoming rug pull in AI software development tools, where prices are rising, and services are being restricted. Having enough control to choose when to run locally becom...

What settings, configurations, and workflows do you use for every .NET app? Carl and Richard talk to Scott Sauber about his list - from organizing folders by feature, to logging, security, and testing. Scott talks about enforcing rules like treating warnings as errors so you won't ignore important warnings, and validation in the build, to make applications more reliable. Each of these items repres...

Large Language Models can generate a lot of text - but is it any good? Carl and Richard talk to Vishwas Lele about his ongoing efforts at pWin.ai to build tools for responding to government RFPs. Vishwas focuses on the quality problem - both the quality of the incoming RFP and the quality of the responding proposal. How do you determine the key requirements of an RFP reliably? And when it comes to...

Use What Works! Carl and Richard talk to Dylan Beattie about the Use What Works movement, encouraging developers to use well-maintained open-source projects available today rather than rolling their own. Dylan explains how folks go down a path of believing a library is simple until they learn enough to realize that every bit of software is more complicated than they realize. And the less code you...

Ready to go nano? Carl and Richard talk to José Simões about the open source .NET nanoFramework - a community-driven project to provide .NET for embedded systems. José talks about the evolution from the .NET microFramework, to something even smaller, while at the same time, microcontrollers have gotten much more powerful. The conversation looks beyond the hobbyist and educational uses of these sys...

Recorded live at the Tavern Hall in Bellevue during the Party with Palermo for the MVP Summit, it's episode 2000! Carl and Richard take questions from the audience and play clips from past guests and listeners about their experiences with .NET, and the role that .NET Rocks has played in their careers. After two thousand shows, there are lots of stories, and plenty to celebrate. Thanks for listenin...

The Y2K bug turned out to be a non-event on January 1, 2000. How did that happen? Carl and Richard bring together a number of stories from folks who were there, fixing the software and updating systems, so effectively that, ultimately, nothing much happened when the clocks rolled over. It was common practice with early software to only store two digits worth of year - back then, storage space was...