The .NET News Daily Issue #270

Your Daily Dose of .NET Insights, Tools, and Trends

Author

Jasen Fici
August 26, 2025

As we cruise through this Tuesday, much like a seasoned classic car owner fine-tuning their prized collectible, let's take a thoughtful pause to assess our trajectory in the world of .NET development. Much like a vintage car, the .NET framework is a well-oiled machine, requiring regular maintenance and updates to stay in peak condition, and today’s curated articles are your toolbox. Peek under the hood as we delve into a repertoire of insights and innovations that promise to keep your skills refined and your projects running smoothly. Buckle up, it's time for a smooth ride down the information highway.

Today's Articles

What’s New in .NET 9: Exploring C# 12 Features and Serverless Performance

https://medium.com/c-sharp-programming/whats-new-in-net-9-exploring-c-12-features-and-serverless-performance-3c17aa6ad6ab

Deep dive: Explore cutting-edge C# 12 features in .NET 9 and benchmark their serverless performance on Linux and Windows containers. Continue reading on .Net Programming »

Building a Fast .NET Core API with Async Programming

https://medium.com/@softacom.com/building-a-fast-net-core-api-with-async-programming-b73a0399b494

Every request to an API starts on a thread from the CLR’s pool. With synchronous execution, that thread stays blocked until completion…

Efficient Caching Strategies: Write-Through vs. Write-Behind Caching

https://blog.stackademic.com/efficient-caching-strategies-write-through-vs-write-behind-caching-5a1ed8efab3d

We will learn about efficient way to update cache so that we will get always updated value in Cache. Continue reading on Stackademic »

Complete CQRS and Domain Events Setup in .NET

https://medium.com/@michaelmaurice410/complete-cqrs-and-domain-events-setup-in-net-0d2b4ac0ccad

If you want the full source code, download it from this link: https://www.elitesolutions.shop/

ArrayPool: The most underused memory optimization in .NET

https://medium.com/@vladamisici1/arraypool-the-most-underused-memory-optimization-in-net-8c47f5dffbbd

Despite offering up to 78x performance improvements and completely eliminating garbage collection pressure, ArrayPool<T> remains one of…

Entity Framework is a $100 Million Mistake ( We Use Dapper + Raw SQL)

https://isitvritra101.medium.com/entity-framework-is-a-100-million-mistake-we-use-dapper-raw-sql-1b216aa87caf

Your database queries are costing you users.

When to Use Generic vs Non-Generic Collections in C#

https://www.c-sharpcorner.com/article/when-to-use-generic-vs-non-generic-collections-in-c-sharp/

Discover the differences between generic and non-generic collections in C#. Learn their impact on performance, type safety, and usability with examples, helping you choose the right collection for eff...

SQL Server Index Fragmentation: What It Is and How to Fix

https://www.c-sharpcorner.com/article/sql-server-index-fragmentation-what-it-is-and-how-to-fix/

Index fragmentation slows SQL Server queries by disrupting data order. This article explains its causes, types, and impact, while offering practical steps to detect, fix, and prevent fragmentation for...

Entity Framework or Dapper: which one is better for .NET/C#?

https://medium.com/@denmaklucky/entity-framework-or-dapper-which-one-is-better-for-net-c-8500ef22b50a

There’s no right answer. Each of these ORMs has its own strengths. However, to figure out which one is more suitable for you at the moment…

Mapster + JSON in C#: The Lean Mapping Playbook (with real-world gotchas)

https://medium.com/c-sharp-programming/mapster-json-in-c-the-lean-mapping-playbook-with-real-world-gotchas-7ff83edd6e21?source=rss------csharp-5

I was debugging a Blazor API at 2 AM when a simple mapping bug made my DTOs look like they were haunted. Spoiler: it wasn’t brujería — it… Continue reading on .Net Programming »

6 Entity Framework Core Performance Pitfalls (and How to Fix Them)

https://medium.com/@andresleiva.4/6-entity-framework-core-performance-pitfalls-and-how-to-fix-them-97e64f49c0a1

Avoid these 6 common Entity Framework Core performance pitfalls in .NET — with real-world scenarios, root causes, and refactors.

Two more LINQ extensions in dotnet 10

https://steven-giesel.com/blogPost/5d88d808-03ac-431a-82fa-756b59b38a7d

The preview 6 of dotnet 10 brings two more functions: InfiniteSequence and Sequence.

5 .NET Mistakes That Are Slowing Your Code Down Right Now

https://blog.stackademic.com/5-net-mistakes-that-are-slowing-your-code-down-right-now-4e7a32cd6f86

Fix these silent killers before they wreck your app’s performance. Continue reading on Stackademic »

Boost Your .NET App Performance: Fixing a Slow EF Core Query

https://medium.com/@soundaryajb4/boost-your-net-app-performance-fixing-a-slow-ef-core-query-3a9ecfef16cc

Introduction

.NET 10 Blazor Hybrid & Angular/React Hybrid Architecture

https://javascript.plainenglish.io/net-10-blazor-hybrid-angular-react-hybrid-architecture-c95f32b7982a

.NET 10 Harnessing the Best of Both Worlds Continue reading on JavaScript in Plain English »

Copilot Diagnostics toolset for .NET In Visual Studio

https://devblogs.microsoft.com/dotnet/github-copilot-diagnostics-toolset-for-dotnet-in-visual-studio/

Debugging doesn’t have to be a grind. With Copilot woven into Visual Studio, you get AI-powered breakpoints, insights, exception fixes, and performance summaries all right where you work. The post Co...

Indexing Internals for Developers and DBAs

https://visualstudiomagazine.com/Articles/2025/08/20/Indexing-Internals-for-Developers-DBAs.aspx

Microsoft’s Bradley Ball dives into the inner workings of SQL Server indexing to help developers and DBAs speak the same language, avoid common pitfalls, and boost performance with smarter, more inten...

5 .NET Debugging Hacks That Will Save You From Pulling Your Hair Out

https://blog.stackademic.com/5-net-debugging-hacks-that-will-save-you-from-pulling-your-hair-out-372751a53eac

Stop swallowing bugs silently and start catching them before they wreck production. Continue reading on Stackademic »

Why Every .NET Team Should Use the Outbox Pattern

https://medium.com/@kittikawin_ball/why-every-net-team-should-use-the-outbox-pattern-e8c245c8b6e8

Ensure reliable event delivery in your .NET microservices with the Outbox Pattern: No more lost messages, duplicates, or inconsistent state.

5 .NET Core Code Patterns for Bulletproof FDA-Compliant MedTech Software

https://www.faciletechnolab.com//blog/5-dotnet-code-patterns-for-bulletproof-fda-compliant-medtech-software/

Build bulletproof FDA-compliant MedTech software with these 5 .NET code patterns. Ensure audit trails, e-signatures & HIPAA security. Download our free checklist.