Performance Hot Paths and .NET AI Agents
A varied .NET roundup covering hot-path performance, Visual Studio at GDC, AI agent patterns, modular monolith data access, JWTs, and cache invalidation.
Jasen's top three picks
- 1 Why IEnumerable Can Kill Performance in Hot Paths
elmah.io Blog - .NET Technical tutorials/guides and new features
A sharp reminder that abstractions have a cost when they sit in hot paths.
- 2 Visual Studio at GDC Festival of Gaming 2026
Microsoft Dev Blogs
A broad look at the dev workflow around VS, Copilot, and gaming tooling.
- 3 .NET AI Community Standup: Real-World AI Agent Architecture in .NET
YouTube
Good production-oriented guidance for teams experimenting with multi-agent systems.
Editor's note
I kept this issue intentionally mixed, from low-level performance to AI tooling and architecture debates. The IEnumerable hot-path piece and the cache invalidation write-up are both practical reads if you spend time tuning real systems. I also liked the modular monolith article for showing concrete options instead of hand-wavy guidance.
Today's articles
Why IEnumerable Can Kill Performance in Hot Paths
elmah.io Blog - .NET Technical tutorials/guides and new features
For F1 racing, choosing the right car is as important as your expertise. No matter how skilled you are, if you race in an ordinary car, you can't stand out. You need to understand the race and use the...
Topics: C# .NET Core Performance
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Visual Studio at GDC Festival of Gaming 2026
Microsoft Dev Blogs
Join us at GDC Festival of Gaming 2026 for a deep dive into Visual Studio, GitHub Copilot, PowerToys, and the Windows tools that speed up your daily dev workflow. We'll show how these tools work toget...
Topics: GitHub GitHub Copilot Visual Studio
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.NET AI Community Standup: Real-World AI Agent Architecture in .NET
YouTube
Using the open-source Interview Coach sample, we’ll explore production patterns for building multi-agent systems in .NET using: - Microsoft Agent Framework - Microsoft Foundry as the model backend - M...
Topics: ASP.NET Core ML.NET OpenAI
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Querying and Performing Transactions Across Multiple Database Schemas in a Modular Monolith
Dev Tips
Query data across schemas in .NET Modular Monolith without breaking module boundaries. Explore 5 proven approaches: inter-module APIs, domain events with eventual consistency, database views, BFF patt
Topics: Clean Architecture Domain-Driven Design Web API
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Screw Repository Pattern in .NET
Medium
I get why one would go for the repository pattern, especially if wide test coverage is the goal. You create an interface, add some methods…
Topics: Domain-Driven Design Design Patterns EF Core
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4️⃣ Session Management Series: JWT Token Generation — Step-by-Step Technical Analysis — 4
Medium
Modern web applications require a secure and portable method for user authentication and authorization processes. JSON Web Token (JWT) is…
Topics: Authentication Authorization JWT
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Solving the distributed cache invalidation
C# Digest
HybridCache combines fast in-memory caching with distributed caching like Redis
Topics: CQRS Performance Redis
Read articleDistributed system pattern: Leader and Followers
C# Digest
one node as decision-maker while others replicate its state
Topics: CQRS Design Patterns Kubernetes
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🌐 Agentic Browser Tools (Experimental) in #VSCode
YouTube
Malicious NuGet packages target ASP.NET developers, steal sensitive data | brief | SC Media
Topics: GitHub Security Visual Studio Code
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Let it Cook - AI work work work work work flows
YouTube
Extend your coding agent with .NET Skills
Topics: .NET Core GitHub Copilot OpenAI
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Copilot CLI in VS Code
YouTube
.NET 10: System.Text.Json Improvements
Topics: .NET 10 GitHub Copilot Visual Studio Code
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How C# Lost Some of Its Original Elegance
""charp" OR "asp.net" OR "fsharp" OR "c#" OR "vb.net" " - Google News
How C# Lost Some of Its Original Elegance
Topics: C# Design Patterns .NET Core
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