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Articles and publications tagged .net across the Atmosphere.

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Tim DeschryverJun 25, 2026

Your first MCP server with ASP.NET

Learn how to query your application's data using natural language by building an ASP.NET MCP server.

Tim DeschryverMay 20, 2026

Running a production-like local environment with Aspire

Prevent integration surprises in production by using Aspire to run local dependencies in a consistent, production-like setup, with Azure Blob Storage and Azurite as a practical example.

Tim DeschryverMay 7, 2026

Improve your AI coding agent with runtime context from Aspire MCP

The power of giving an AI agent access to OpenTelemetry data through Aspire MCP is simple: it gives the agent better input to analyze. Instead of reasoning only from source code, the agent can inspect the actual behavior of the running system. That makes its insights more reliable, resulting in more relevant and correct suggestions.

Tim DeschryverApr 23, 2026

Keep Agentic AI Simple: A Practical Workflow for Software Development

You don’t need a complex setup or endless prompt tricks to get value from AI in software development. I've experienced that a few practices like an AGENTS.md file, Agent Skills, and specifications can dramatically improve the speed, quality, and consistency of agents.

Tim DeschryverApr 7, 2026

Containerize an ASP.NET Core BFF and Angular frontend using Aspire

Using Damien Bowden's secure ASP.NET Core and Angular BFF template as a starting point, this post shows how to integrate Aspire to improve local development and prepare the application for containerized deployment.

Tim DeschryverFeb 26, 2026

A minimal way to integrate Aspire into your existing project

Did you know that you don't need to rebuild your solution to adopt Aspire? Instead, start small and improve over time. Let's take a look at how to integrate Aspire into your existing project with minimal changes, allowing for a gradual adoption of Aspire's features.

Tim DeschryverJan 29, 2026

Changing how ASP.NET generates OpenAPI schema names

Preventing any naming conflicts in the OpenAPI documentation by ensuring that each schema name is uniquely identified by its full name.

Tim DeschryverJan 16, 2026

Using FusionCache's Backplane to synchronize HybridCache instances across multiple instances

HybridCache is a great caching solution but it doesn't sync in-memory caches across instances. Discover how FusionCache can help you achieve this (and much more) with its Backplane feature.

oh hey, it's owais

oh hey, it's owaisDec 18, 2025

Dev Log 38: 2025-12-18

Tim DeschryverDec 4, 2025

Named global query filters in Entity Framework Core 10

Entity Framework Core 10 enhances the global query filters feature, allowing you to define multiple filters per entity and selectively disable them by name. This powerful enhancement gives you fine-grained control over query filtering, perfect for implementing soft deletes.

.NETEntity Framework

Tim DeschryverNov 13, 2025

Using cookies for authentication in an Angular application

Learn how to simplify authentication in Angular applications by leveraging secure, cookie-based authentication through a Backend for Frontend (BFF) pattern. This approach eliminates the complexity of client-side token management while improving the security of your client-side code.

Tim DeschryverOct 30, 2025

Write strongly typed Web API integration tests using Kiota and OpenAPI

Recently, I discovered Kiota, a tool that generates API clients from OpenAPI specifications, and it has significantly simplified my testing process. In this blog post, I'll share how I use Kiota to create type-safe HTTP clients that are consumed within the integration tests for my ASP.NET Web API endpoints.

Tim DeschryverSep 25, 2025

Forwarding authenticated calls to a downstream API using YARP

A Backend for Frontend (BFF) typically communicates with downstream APIs on behalf of the user. In this post, we'll explore how to forward authenticated calls to a downstream API using YARP.

Tim DeschryverSep 11, 2025

Secure your Yarp BFF with cookie-based authentication

Learn how to implement a secure cookie-based authentication in a YARP (Yet Another Reverse Proxy) Project that acts as the Backend for Frontend (BFF) architecture within a .NET Aspire solution. We also cover why we should prefer cookies over tokens for authentication (spoiler, it's security related).

Tim DeschryverAug 28, 2025

Writing isolated (integration)tests with TestContainers

If you're having troubles with setting up or running your test environment, then this blog post is for you. We will explore what TestContainers is, what problem it solves, and why you should consider using it within your testing strategy.

Tim DeschryverAug 15, 2025

VS Code as a modern Full‑Stack workspace, Powered by Copilot

Why VS Code transitioned into my primary development environment. The combination of its extensibility, the different integrations, and GitHub Copilot's capabilities makes it an ideal choice for my modern full-stack development needs.

Tim DeschryverJul 31, 2025

Fire your Playwright tests on demand from the .NET Aspire dashboard

Let's see how to use WithExplicitStart to integrate (TypeScript) Playwright tests within Aspire's dashboard.

Tim DeschryverMay 14, 2025

ASP.NET 10: Validating incoming models in Minimal APIs

Using data annotations to validate incoming models in ASP.NET 10 Minimal APIs makes it easy to ensure that the model is valid before processing the request.

Tim DeschryverApr 17, 2025

Using YARP as BFF within .NET Aspire: Integrating YARP into .NET Aspire

This blog post is the first in a series of posts in which a YARP project is integrated within a .NET Aspire project, acting as a secure Backend for Frontend (BFF) for an Angular application.

Tim DeschryverMar 6, 2025

Some observations while writing my first Azure Function

A detailed exploration of the process and insights gained while creating my first Azure function.

Tim DeschryverDec 17, 2024

Sending (browser) OpenTelemetry traces from an Angular Application to .NET Aspire

How to configure .NET Aspire to enable browser OpenTelemetry data from an Angular application.

Tim DeschryverOct 29, 2024

What about my API documentation now that Swashbuckle (Swagger) is no longer a dependency in ASP.NET 9

As you will see in this blog post, the "baked-in" Swashbuckle package is no longer a dependency in the ASP.NET 9 project template. Let's take a look at what this means for your API documentation and go through some options to render the OpenAPI document.

Tim DeschryverOct 23, 2024

New LINQ methods in C# 13: Index, CountBy, AggregateBy

Taking a look (including examples) at the new LINQ methods that will be introduced in C# 13, as part of the .NET 9 release.

Tim DeschryverOct 10, 2024

Create a custom SQL expression with Entity Framework, or how to make EF interpret your Value Types

A deep-dive at the internals of Entity Framework to come up with a solution to make EF interpret your value types, in this particular case a strongly-typed ID (of the StronglyTypedId NuGet Package).