Home Archive API performance, local AI, EF Core 10 – .NET News Daily Issue #419 (Mar 25, 2026)

Editor's note

I pulled together a pretty mixed bag today: performance, AI, security, and database work all made the cut. The API performance mistakes piece and the ThreadPool starvation guide both tackle problems that quietly hurt real systems. I also liked the local open-source AI PoC in VS Code and the EF Core 10 bulk operations benchmark for being practical, not theoretical.

API performance, local AI, EF Core 10

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Today's Articles

C# Performance Mistakes That Silently Kill Your APIs (And How to Fix Them)

https://medium.com/@ravikumar.makwana/c-performance-mistakes-that-silently-kill-your-apis-and-how-to-fix-them-4e2fe8e27eab?source=rss------dotnet-5

Most C# APIs start fast.

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Going Local (& a Bit Loco) with Open-Source AI in VS Code

https://visualstudiomagazine.com/Articles/2026/03/17/Going-Local-Loco-with-Open-Source-AI-in-VS-Code.aspx

This hands-on PoC shows how I got an open-source model running locally in Visual Studio Code, where the setup worked, where it broke down, and what to watch out for if you want to apply a local model ...

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Why Your .NET App Hangs: A Beginner’s Guide to ThreadPool Starvation

https://www.c-sharpcorner.com/article/why-your-net-app-hangs-a-beginners-guide-to-threadpool-starvation/

Unlock .NET app performance! Learn to diagnose & fix ThreadPool Starvation, a common issue causing hangs & slowdowns. Master async/await for optimal scaling.

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How to Protect Web Applications from DDoS Attacks?

https://www.c-sharpcorner.com/article/how-to-protect-web-applications-from-ddos-attacks/

Shield your web applications from DDoS attacks! Learn practical strategies using CDNs, WAFs, rate limiting, and more to maintain performance and availability.

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What Is Vector Database and Why It Is Important for AI Applications?

https://www.c-sharpcorner.com/article/what-is-vector-database-and-why-it-is-important-for-ai-applications/

Discover vector databases: the key to smarter AI. Learn how they power semantic search, recommendations, and LLMs by understanding data meaning, not just keywords.

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Designing Undo & Redo features

https://medium.com/@kharavela.jain/designing-undo-redo-features-7c57b5902779?source=rss------dotnet-5

In the era of modern cloud-native application design, many powerful and time-tested design patterns are often overlooked due to the focus…

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Mastering DateTime & Time Zones in ASP.NET Core: Stop Breaking Your Users’ Clocks

https://medium.com/@Rajdip27/mastering-datetime-time-zones-in-asp-net-core-stop-breaking-your-users-clocks-780b548faa2d?source=rss------csharp-5

A deep-dive into DateTimeOffset, TimeZoneInfo, and UTC-first architecture that scales globally — with real code, real scenarios, and zero…

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Hey network, I want to share a free tool I built to make starting new .NET

https://medium.com/@rakibul.h.rabbi/surviving-the-net-cli-how-i-built-and-published-my-first-microservice-template-to-nuget-7c05f4f54564?source=rss------csharp-5

If you’ve ever started a new microservice, you know how tedious the initial boilerplate can be — wiring up the folder architecture…

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What is async and await in C# with Example

https://www.c-sharpcorner.com/article/what-is-async-and-await-in-c-sharp-with-example/

Unlock the power of async/await in C#! Learn how to build responsive, scalable .NET applications with non-blocking asynchronous programming. Includes practical examples!

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MSSQL Extension for VS Code: SQL Notebooks, AI-Powered Schema Design, Data API builder & More

https://devblogs.microsoft.com/azure-sql/vscode-mssql-march-2026/

The MSSQL extension for VS Code v1.41 continues to evolve, delivering features that make SQL development more integrated, more powerful, and more developer-friendly. In this release, we're introducing...

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Modernize .NET Application Using AI

https://www.c-sharpcorner.com/article/modernize-net-application-using-ai/

Learn how to modernize .NET applications using GitHub Copilot modernization agent. Discover AI-powered upgrades, Azure migration, and step-by-step modernization workflow.

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Bulk Operations in EF Core 10 - Benchmarking Insert, Update, and Delete Strategies

https://codewithmukesh.com/blog/bulk-operations-efcore/

Learn how to optimize bulk insert, update, and delete operations in EF Core 10. We benchmark 5 approaches with real numbers and a decision matrix for every scenario.

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Multiple DbContext in EF Core 10 - Scenarios, Setup & Migrations

https://codewithmukesh.com/blog/multiple-dbcontext-efcore/

When and how to use multiple DbContext in EF Core 10. Multi-database setup, schema separation, migrations, transactions, and modular monolith patterns.

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Jasen's take on today's picks

C# Performance Mistakes That Silently Kill Your APIs (And How to Fix Them)

Good reminder that API speed is usually lost in small mistakes, not one big failure.

Going Local (& a Bit Loco) with Open-Source AI in VS Code

A hands-on local AI setup in VS Code is useful, especially because it shows the rough edges too.

Why Your .NET App Hangs: A Beginner’s Guide to ThreadPool Starvation

ThreadPool starvation is still one of the easiest ways to make a healthy app look broken.

How to Protect Web Applications from DDoS Attacks?

The DDoS article stays practical by focusing on defenses teams can actually ship.

What Is Vector Database and Why It Is Important for AI Applications?

Vector databases keep showing up because semantics matter more than keyword matching in AI apps.

Designing Undo & Redo features

Undo and redo is classic design-pattern territory, and it's still worth revisiting.

Mastering DateTime & Time Zones in ASP.NET Core: Stop Breaking Your Users’ Clocks

DateTime and time zones remain a global bug factory; UTC-first discipline still wins.

Hey network, I want to share a free tool I built to make starting new .NET

A microservice template can save hours of boilerplate if it stays opinionated but light.

What is async and await in C# with Example

Async and await basics still matter because many performance bugs start there.

MSSQL Extension for VS Code: SQL Notebooks, AI-Powered Schema Design, Data API builder & More

The MSSQL VS Code update is a nice sign that database tooling keeps getting more productive.

Modernize .NET Application Using AI

AI-assisted modernization is interesting when it helps plan upgrades instead of pretending to automate everything.

Bulk Operations in EF Core 10 - Benchmarking Insert, Update, and Delete Strategies

EF Core bulk operation benchmarks are the kind of evidence-based article teams should bookmark.

Multiple DbContext in EF Core 10 - Scenarios, Setup & Migrations

Multiple DbContext guidance is timely for modular monoliths and split-schema systems.

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