In this multi-part blog series, we’ll build a reasonably full-featured code base for automatically encrypting/decrypting specific properties on types that are being serialised and deserialised using System.Text.Json. In future posts, we’ll eventually build up to a solution that utilises Azure Key Vault to secure the encryption key protecting the data. Today, we’ll begin with some […]
How dotnet.exe resolves and loads the hostfxr library – Exploring the .NET muxer
In this post, we will continue our journey into the functionality and implementation of dotnet.exe, specifically focusing on how the hostfxr library is resolved and loaded. This post follows part one of this series, “A Brief Introduction to the .NET Muxer (aka dotnet.exe)“. Note: These posts are a deep dive into .NET internals and won’t […]
A Brief Introduction to the .NET Muxer (aka dotnet.exe)
This post marks the start of what I expect will be a long-term effort to explore the inner workings of .NET, expose the “magic” behind the scenes, and explain the mechanisms and underlying components of the .NET execution model. Today, we begin with a brief introduction to the .NET muxer (dotnet.exe). Note: These posts are […]
Implementing ASP.NET Core Automatic Span (Activity) Linking for Internal Redirects with Middleware on .NET 9
Today, I’ll continue a current theme for my content based on my experiences implementing OpenTelemetry instrumentation in practice for .NET applications. In this post, I want to focus on a minor enhancement I recently added to a project that enables span links between request traces on ASP.NET Core during internal redirects. NOTE: This code relies […]
An Efficient Dictionary for IPAddress Tracking using .NET 9 with AlternateLookup and IAlternateEqualityComparer
In this post, I will introduce and demonstrate enhancements to collections in .NET 9 and C# 13 for low-allocation code paths. Specifically, I will demonstrate using a custom IAlternateEqualityComparer and the AlternateLookup on a Dictionary used for efficiently tracking IP address information, keyed on the bytes of IP addresses. My use case, the basis for […]