.NET 11 Gives MemoryCache First-Class OpenTelemetry Metrics
.NET 11 Preview 4 ships a built-in meter for Microsoft.Extensions.Caching.Memory, so cache hit ratio and evictions flow into OpenTelemetry without a background poller.
Blog
Page 48 of 93
Microsoft Agent Framework vs Semantic Kernel for a Greenfield .NET Agent
For a new .NET agent in 2026, start on Microsoft Agent Framework 1.0. Semantic Kernel is in maintenance mode. Here is the side-by-side and the one case where SK still wins.
Migrate from IWebHostBuilder to WebApplication.CreateBuilder in .NET 11
A step-by-step migration from the old Startup.cs plus WebHostBuilder hosting model to the minimal hosting model with WebApplication.CreateBuilder, including the ASPDEPR008 deprecation, middleware ordering, IStartupFilter, and how to keep your tests working.
Migrate from System.Web.HttpContext to Microsoft.AspNetCore.Http.HttpContext
A practical migration from the ASP.NET Framework System.Web.HttpContext to the ASP.NET Core 11 HttpContext: HttpContext.Current, the property map, Server.MapPath, Session, and the System.Web adapters shim for incremental migrations.
Migrate from ValueTask<T> back to Task<T>: when and why (.NET 11, C# 14)
A practical checklist for reverting ValueTask and ValueTask<T> return types to Task and Task<T>, what breaks at the call sites, how to verify each change, and how to know whether the swap was ever worth it.
Claude Agent SDK and claude -p Get Their Own Credit Pool on June 15
Anthropic is splitting programmatic Claude usage off your subscription on 2026-06-15. Here is what counts as programmatic, the per-plan credit, and how to keep your CI agents from silently stalling.
Microsoft Agent Framework vs LangChain vs LlamaIndex in 2026
All three hit 1.0. Pick Microsoft Agent Framework if you live in Azure and .NET, LangChain/LangGraph for vendor-neutral graph orchestration, LlamaIndex for retrieval-grounded agents.
Migrate a Blazor Server app to Blazor United (Blazor Web App) in .NET 11
A step-by-step checklist to move a standalone Blazor Server app to the unified Blazor Web App template on .NET 11, keeping every page on InteractiveServer with zero behaviour change.
Migrate from in-process Azure Functions to the isolated worker model (.NET 8 / .NET 11)
A step-by-step checklist to move a .NET in-process Azure Functions app to the isolated worker model before the November 10, 2026 retirement, with csproj diffs, signature rewrites, and a slot-swap rollout.
Migrate from Serilog to OpenTelemetry logging in .NET 11
A step-by-step guide to moving a .NET 11 app off Serilog and onto OpenTelemetry logging: the low-risk Serilog.Sinks.OpenTelemetry bridge, the full Microsoft.Extensions.Logging cut-over, what breaks, how to verify, and how to roll back.