Email security, caching logic, SOLID patterns
Secure email intake, caching strategies, SOLID principles, mapper comparisons, domain events, EF Core navigation, and ONNX model inference in .NET.
Jasen's top three picks
- 1 How to Secure an Email Attachment Intake Service in C#
cloudmersive.medium.com
Email intake workflows need layered security—validation, scanning, and safe storage patterns matter more than speed.
- 2 Stop Caching Everything: The Grey Logic Behind High-Performance Applications
medium.com
Caching isn't always the answer; understand your access patterns and bottlenecks before reaching for Redis.
- 3 Numerics.NET with Jeffrey Sax
spreaker.com
Numerics.NET fills a real gap for statistical and mathematical work in .NET—worth exploring if you're doing data-heavy tasks.
Editor's note
This week’s mix spans security fundamentals, performance discipline, and emerging AI workflows. The email attachment security piece and the caching deep-dive both challenge common shortcuts—worth your time if you’re building production systems. Also flagging the System.Text.Json unions post for anyone wrestling with .NET 11 serialization.
Today's articles
How to Secure an Email Attachment Intake Service in C#
cloudmersive.medium.com
Email attachment intake applications tend to move content quickly from inbox to storage, document processing, or other automated workflows.
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Stop Caching Everything: The Grey Logic Behind High-Performance Applications
medium.com
Performance tuning is often approached with a simple mindset:
Topics: C# Performance
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Numerics.NET with Jeffrey Sax
spreaker.com
So what can numerics do for you? Carl and Richard talk to Jeffrey Sax about his work building Numerics.NET, a collection of general-purpose mathematical and statistical classes built for .NET. Jeffrey...
Topics: C#
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3D MonoGame Camera & Directional Light
hooleyautomation.medium.com
Are you looking at starting a new 3D project using MonoGame? This Camera is a part of my Star-Lite framework. Our Camera3D has, so far…
Topics: C#
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You’re Already Doing Most of SOLID.
medium.com
SOLID might be the most-written-about topic in software. I almost skipped it in my study plan for exactly that reason.
Topics: Design Patterns Solid Principles
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AutoMapper vs Mapster vs Manual Mapping in .NET 10 - Pick the Right One in 2026
codewithmukesh.com
AutoMapper went commercial in 2025. Compare AutoMapper, Mapster, Mapperly, and manual mapping in .NET 10 with real benchmarks and a decision matrix.
Topics: AutoMapper .NET 10
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How to Run Local ONNX Models in C#: Building an Offline AI Image Processor on Windows
medium.com
If you are developing desktop utilities or working with computer vision tasks on Windows, relying on external cloud APIs for things like…
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Domain Events Are NOT Your Public API
codeopinion.com
You finally did it. You stopped publishing CRUD events and started broadcasting domain events. Instead of publishing ShipmentStatusChanged, ShipmentUpdated, or EstimatedDeliveryDateChanged, you starte...
Topics: Domain-Driven Design Event Sourcing
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The pain of serializing unions and closed class hierarchies with System.Text.Json: Exploring the .NET 11 preview - Part 7
andrewlock.net
In this post I discuss the System.Text.Json support for unions and closed hierarchies coming in .NET 11, the decisions made, and some of the sharp edges I hit
Topics: .NET 10 System.Text.Json
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GitHub Copilot Customize Tab: Managing MCP Servers, Plugins, Skills, and Canvases
c-sharpcorner.com
Learn how GitHub Copilot's Customize tab manages MCP servers, plugins, skills, and canvases to extend AI coding workflows and customize enterprise developer experiences.
Topics: C# GitHub Copilot
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EF Core navigation property returning null? Here's why
roundthecode.com
Find out why your EF Core navigation property come back as null. Learn how Include() fixes it, when you need it, and the pitfalls to watch for.
Read article💻 Issue 530 - The Stack Nobody Picks Might Be the One That Picks You
dotnet.libhunt.com
Topics: C#
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Implementation OpenTelemetry with .NET
medium.com
Module 2: Implementation · Chapter 7 Logging
Topics: .NET Core OpenTelemetry
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