via @ dotnet : Use C# unions and closed hierarchies in ASP.NET Core https:// ift.tt/DeH84Mp # CSharp # Unions # ClosedHierarchies # ASP .NETCore # MinimalAPIs # SystemTextJson # STJ # Polymorphism # J

via @ dotnet : Use C# unions and closed hierarchies in ASP.NET Core https:// ift.tt/DeH84Mp # CSharp # Unions # ClosedHierarchies # ASP .NETCore # MinimalAPIs # SystemTextJson # STJ # Polymorphism # JsonSerialization # JsonPolymorphism # JsonDiscriminator # Jso …

☕ *Morning Coffee Link* -- Getting started with RAG in ASP .NET Core - https:// blog.elmah.io/getting-started- with-rag-in-asp-net-core/ (Morning Coffee Link is a single link every weekday about codin

OpenAPI in ASP.NET Core 10: Swagger Differences, Benefits and UI Integration - Ottorino Bruni

☕ *Morning Coffee Link* -- Signal Shingle: a novel architecture for high-performance ASP .NET multi-widget sites - https://www. mostlylucid.net/blog/signal-sh ingle-architecture (Morning Coffee Link i

NET multi-widget sites - https://www. net/blog/signal-sh ingle-architecture (Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers).

DLR at Innotrans: From new night trains, ATO & virtual coupling

utm_source=flipboard&utm_medium=activitypub Posted into heise online international @heise-online-international-heiseonline The German Aerospace Center is also involved in the rail sector. At this year’s Berlin Rail Transport Exhibition, there were new developments.

☕ *Morning Coffee Link* -- Best Practices for Exceptions in ASP .NET Core - https://www. telerik.com/blogs/best-practic es-exceptions-aspnet-core (Morning Coffee Link is a single link every weekday ab

NET Core - https://www. com/blogs/best-practic es-exceptions-aspnet-core (Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers).

C# Dev Tip of the Day Avoid Boolean parameters that make calls hard to understand. https:// learn.microsoft.com/en-us/dotn et/csharp/fundamentals/coding-style/coding-conventions

C# Dev Tip of the Day Avoid Boolean parameters that make calls hard to understand.

.NET 11 Preview 7 is here! Explore the latest runtime, SDK, library, and ASP.NET Core updates shaping the next .NET release. # dotnet # CSharp # aspnet https:// isaacl.dev/g98

Stories I like: Middleware vs Filter in ASP.NET Core: What’s the Difference? https:// dev.to/omeiza_ahmed/middleware -vs-filter-in-aspnet-core-whats-the-difference-flp

C# Dev Tip of the Day Avoid Task.Run to hide blocking I/O in ASP.NET Core request handlers. https:// learn.microsoft.com/en-us/aspn et/core/fundamentals/best-practices

NET Core request handlers.

C# Dev Tip of the Day Avoid synchronous file, network, and database I/O in ASP.NET Core request paths. https:// learn.microsoft.com/en-us/aspn et/core/fundamentals/best-practices

NET Core request paths.

Review the latest ASP.NET Core changes heading toward .NET 11, explore API and tooling improvements, and share feedback with the team before general availability. # aspnet # dotnet https:// isaacl.dev

You can now run CritterWatch in embedded mode in any Wolverine ASP.Net Core application in the new CW 1.1 beta: https:// jasperfx.net/news/critterwatch -1-1-embedded-mode.html

You can now run CritterWatch in embedded mode in any Wolverine ASP.Net Core application in the new CW 1.1 beta: https:// jasperfx.net/news/critterwatch -1-1-embedded-mode.html

.NET ecosystem updates and community events

Between 2026-09-08 and 2026-09-10, Microsoft announced September 2026 servicing releases for .NET and .NET Framework, opened a call for presenters at .NET Conf 2026 Community Days, released .NET 11 Release Candidate 1, and posted guidance on C# unions and closed hierarchies in ASP.NET Core. Community engagement and platform updates.

https:// nestenius.se/net/implementing- bff-pattern-in-asp-net-core-for-spas/ - # BFF keeps sensitive tokens out of the browser. Here's a series for # ASPnet to implement # BFF . Nice work https://www

ASP.NET Core is advancing safer polymorphic APIs with explicit permitted types, exhaustive handling, and clearer OpenAPI schemas. Explore the design and share your feedback. # dotnet # aspnet # CSharp

Blogged: Experimental support for Device Bound Session Credentials (DBSC) in ASP.NET Core - Exploring the .NET 11 preview - Part 8 https:// andrewlock.net/exploring-the-d otnet-11-preview-8-experiment

☕ *Morning Coffee Link* -- New Twitter launches, says Musk’s X gave up the name - https:// arstechnica.com/tech-policy/20 26/08/new-twitter-launches-says-musks-x-gave-up-the-name/ (Morning Coffee Link

com/tech-policy/20 26/08/new-twitter-launches-says-musks-x-gave-up-the-name/ (Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers). See the entire list at https://www.

Securing an MCP Server on ASP.NET Core: OAuth 2.1, Scopes, and Token Audience - Taras Kovalenko

☕ *Morning Coffee Link* -- Getting the Client IP Address in ASP .NET Core - https:// weblog.west-wind.com/posts/202 6/May/13/Getting-the-Client-IP-Address-in-ASPNET-Core (Morning Coffee Link is a sing

com/posts/202 6/May/13/Getting-the-Client-IP-Address-in-ASPNET-Core (Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers). See the entire list at https://www.

☕ *Morning Coffee Link* -- REST API Security Best Practices in ASP .NET Core - https:// antondevtips.com/blog/rest-api -security-best-practices-in-aspnetcore (Morning Coffee Link is a single link ever

com/blog/rest-api -security-best-practices-in-aspnetcore (Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers). See the entire list at https://www.

Mixed tech and unrelated sports content

The cluster contains disparate fragments with no coherent theme: a reference to a Mayo sports moment from Irish Times alongside multiple unrelated articles about ASP.NET Core, C# Semantic Kernel streaming, GitHub Actions CI/CD, and Blazor deployment. These represent entirely separate topics.

.NET Quickstart

Tech firms launch coalition against AI cyberattacks

OpenAI led an open letter signed by more than 100 organizations, including Anthropic, Microsoft, Google, Amazon, and others, on August 27–29, 2026, calling for coordinated defense against rising AI-enabled cyberattacks. Nvidia's new safety platform received cautious praise by November 2026, with experts noting no single solution exists to AI security risks.