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.
Performance Hot Paths and .NET AI Agents
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Today's Articles
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Jasen's take on today's picks
Why IEnumerable Can Kill Performance in Hot Paths
A sharp reminder that abstractions have a cost when they sit in hot paths.
Visual Studio at GDC Festival of Gaming 2026
A broad look at the dev workflow around VS, Copilot, and gaming tooling.
.NET AI Community Standup: Real-World AI Agent Architecture in .NET
Good production-oriented guidance for teams experimenting with multi-agent systems.
Querying and Performing Transactions Across Multiple Database Schemas in a Modular Monolith
Useful options for keeping module boundaries intact without forcing bad data access patterns.
Screw Repository Pattern in .NET
A strong case for rethinking repository layers when they add more ceremony than value.
4️⃣ Session Management Series: JWT Token Generation — Step-by-Step Technical Analysis — 4
A practical JWT walkthrough for apps handling auth and token generation.
Solving the distributed cache invalidation
HybridCache and Redis make the cache-invalidation problem feel a little less mythical.
Distributed system pattern: Leader and Followers
A classic distributed-systems pattern explained with just enough clarity to be useful.
🌐 Agentic Browser Tools (Experimental) in #VSCode
Short but important: supply-chain risk is still a real concern for ASP.NET teams.
Let it Cook - AI work work work work work flows
Extending coding agents with .NET Skills is the kind of workflow automation that can pay off fast.
Copilot CLI in VS Code keeps the AI-tooling momentum going; the .NET 10 JSON improvements are a nice bonus.
How C# Lost Some of Its Original Elegance
A thoughtful critique of how C# has evolved, even if you may not agree with every point.












