The .NET Insider – Issue 11

The fourth preview of .NET 10 introduces enhancements across the .NET Runtime, SDK, libraries, C#, ASP.NET Core, Blazor, and .NET MAUI. Notable updates include new async Zip APIs, performance improvements in GZipStream, and JSON Patch support with System.Text.Json.

This update addresses a spoofing vulnerability in MSBuild (CVE-2025-26646) affecting .NET 8.0 and 9.0, urging developers to update immediately. The release includes security and quality improvements for .NET and .NET Framework.

This article explores implementing semantic caching using Azure Managed Redis to enhance AI applications. Semantic caching stores past LLM outputs with vector representations, reducing latency and cost by retrieving relevant responses from the cache before invoking the LLM.

Microsoft introduces the Microsoft.Extensions.AI.Evaluation.Safety package, providing evaluators to detect harmful or sensitive content in AI-generated outputs. These tools integrate with Azure AI Foundry Evaluation service, enabling safety checks in development workflows.

Visual Studio 17.14 introduces Agent Mode in preview, allowing GitHub Copilot to autonomously plan, edit, and iterate on code based on natural language prompts. This feature enhances productivity by automating multi-step coding tasks.

The general availability of Visual Studio 2022 version 17.14 brings features like Agent Mode, MCP support, AI doc comment generation, and a new monthly release cadence. These enhancements aim to improve developer productivity and streamline workflows.

Tim Deschryver demonstrates how to integrate YARP (Yet Another Reverse Proxy) as a Backend-for-Frontend (BFF) within .NET Aspire projects, enhancing routing and API gateway capabilities.

The author discusses the benefits of using .NET Aspire for developing and debugging distributed systems, highlighting its features and advantages.

Tim Deschryver explains the new built-in validation support for Minimal APIs in .NET 10, simplifying model validation processes.

This article compares WebSockets and SignalR, guiding ASP.NET Core developers on choosing the appropriate technology for real-time communication.