The .NET News Daily Issue #437

https://akash-shah.medium.com/ef-core-query-performance-how-to-write-fast-and-efficient-queries-2d574c4664f3?source=rss------dotnet-5

Learn projection, AsNoTracking, indexing, and optimization techniques to build high-performance EF Core APIs.

https://codeopinion.com/testing-needs-a-seam-not-an-interface/

In my last video, I said that clean architecture was killing your velocity. And man, you guys had thoughts. The number one pushback, the hill a lot of people were willing to die on, was testing. And I...

https://medium.com/@neezpau/net-c40e7c25e7f7?source=rss------dotnet-5

Formerly named .NET core, it is a free and open source computer software framework for Windows, Linux and macOS operating systems. It is…

https://medium.com/@maratfmu/i-built-a-net-library-for-ach-files-and-made-it-much-faster-than-the-popular-alternative-e38db3b95ead?source=rss------csharp-5

How `ReadOnlySpan<T>`, a `ref struct`, and some simple design decisions made parsing ACH files dramatically faster

https://www.youtube.com/watch?v=DZn9bNDEs4U

Lewis Liu and Amy Boyd walk through how memory is natively integrated with Microsoft Agent Framework and LangGraph, enabling agents to persist user preferences, conversation context, and task outcomes...

https://medium.com/@123ajaybisht/resilience-in-net-polly-v8-retry-circuit-breaker-and-timeout-patterns-da5001d0f278?source=rss------dotnet-5

Polly v8 rewrote the entire API and most tutorials are now outdated. Here is the complete production guide to the new ResiliencePipeline —…

https://www.c-sharpcorner.com/article/difference-between-yield-return-and-return-in-c-sharp-with-examples/

Unlock the power of C#! Discover the difference between `return` and `yield return` for efficient data handling. Learn when to use each for optimized memory and performance in your applications. Maste...

https://medium.com/@makarchie/i-spent-a-weekend-building-a-c-web-api-without-a-csproj-and-sln-and-it-felt-a-lot-like-go-bb2be166b374?source=rss------csharp-5

I’ve been writing C# on and off since around 2020, and for most of that time the first thing I do on any new project is the same: dotnet…

https://dotnettips.com/2026/04/19/string-performance-why-some-string-searches-are-slower-than-you-think/

String searching is fundamental to modern applications, yet its performance impact is often overlooked. This article explores how common string search patterns can quietly slow down your code—and how ...

https://devblogs.microsoft.com/oldnewthing/20260413-00/?p=112227

A colleague told me that there was an O(N) algorithm for finding a duplicated item in an array of N integers in the range 1 to N − 1. There must be a duplicate due to the pigeonhole principle. There m...

https://tonyqus.medium.com/the-build-time-rebellion-when-net-maintainers-fought-back-64dcd2c02dd3?source=rss------dotnet-5

Introduction: The Invisible Infrastructure

https://medium.com/@ashokitschool/still-writing-long-sql-queries-for-every-database-operation-f24178172c86?source=rss------dotnet-5

What if you could interact with your database using simple C# code?

https://medium.com/@branquinhomanu/the-visual-studio-shortcuts-that-cut-my-azure-debugging-time-in-half-89ffba8b6083?source=rss------csharp-5

Stop clicking through menus while your Azure logs pile up.

https://www.c-sharpcorner.com/article/running-local-ai-with-llamasharp-in-net-a-developers-guide/

Run powerful AI models locally in .NET with LlamaSharp! This guide covers setup, model selection (Llama 3, Phi-4), GPU acceleration, and integration with Semantic Kernel.