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How to implement the mediator pattern in C# with step-by-step code examples, best practices, and common pitfalls for behavioral design patterns. Link to article: https://www.devleader.ca/2026/06/08/how-to-implement-mediator-pattern-in-c-stepbystep-guide
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A few years ago, I introduced , a library to ensure you always deal with full paths in your applications and provide common methods to manipulate them easily. Recently, I've added new features to the library, including new methods and a set of Roslyn analyzers to help you use the library correctly. The main idea of …
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I was recommended NCronJob for implementing a background worker in ASP.NET Core and so I decided to give it a try, read the docs and learn this. This NuGet package is open source and works great. I implemented two simple jobs, one concurrent and one not concurrent which sends messages via SignalR. Code: …
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Welcome to another issue of Dev Leader Weekly! In this issue, I dig into a Reddit thread about the management trap -- why engineering management is a fundamentally different job than being an IC, how I think about absorbing chaos so my team can stay focused, and what you actually need to understand before you take that …
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Learn asp.net core middleware: how the request pipeline works, custom IMiddleware, correct middleware order, and real-world examples like correlation IDs in .NET 10. Link to article: https://www.devleader.ca/2026/06/07/aspnet-core-middleware-building-and-using-the-request-pipeline
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Explore iterator pattern best practices in C# including yield return patterns, lazy evaluation, disposal, thread safety, and performant custom iterators. Link to article: https://www.devleader.ca/2026/06/07/iterator-pattern-best-practices-in-c-code-organization-and-maintainability
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The book "Rock Your Code: Code & App Performance for Microsoft .NET" emphasizes the evolving nature of .NET performance. Spargine's Fast methods are designed to optimize code efficiency while allowing developers to maintain consistency in method usage. These methods adapt to platform improvements, …
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Learn asp.net core model validation with data annotations, custom attributes, IValidatableObject, and FluentValidation for robust, testable input handling. Link to article: https://www.devleader.ca/2026/06/06/model-validation-in-aspnet-core-data-annotations-and-fluentvalidation
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A developer opens GitHub Copilot Chat, sees a list of available models, and picks the one that sounds strongest. Maybe it is the largest model.… Link to article: https://build5nines.com/github-copilot-has-a-model-governance-gap-hiding-in-plain-sight/
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Master the mediator design pattern in C# with code examples, real-world scenarios, and best practices for reducing object coupling. Link to article: https://www.devleader.ca/2026/06/06/mediator-design-pattern-in-c-complete-guide-with-examples
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DRY was never about code that looks the same. It's about knowledge. Most of the tangled abstractions I've had to unwind started as a well-meaning attempt to remove duplication that was never really duplication. Here's how I think about it now, and the rule I use instead. Link to article: …
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Master asp.net core error handling with Problem Details (RFC 9457), IExceptionHandler, and global middleware for consistent Web API responses in .NET 10. Link to article: https://www.devleader.ca/2026/06/05/error-handling-in-aspnet-core-web-api-problem-details-and-global-handlers
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AI agents are moving fast. According to our State of Agentic AI report, 60% of organizations already have AI agents in production, yet 40% cite security and compliance as the number-one barrier to scaling them further. And that gap between adoption and oversight is exactly where AI governance lives. As AI takes on …
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A little while ago, we considered how the cover of the book C++: The Programming Language raises questions not answered by the cover, since the cover illustratio Link to article: https://devblogs.microsoft.com/oldnewthing/20260605-01/?p=112391
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Last time, we looked at how clang's libcxx implementation of std::rotate uses cycle decomposition to minimize the number of swaps. Doing so requires calculating the greatest co Link to article: https://devblogs.microsoft.com/oldnewthing/20260605-00/?p=112389
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Most programming languages follow a familiar trajectory: early experimental releases, rapid iteration, and then – at some point – a 1.0 version that signals stability and the potential for serious adoption. Zig hasn’t followed that well-trodden path. What could be the reason? Andrew Kelley quit his job in 2018 to build …
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Learn when to use the iterator pattern in C# with decision criteria and practical examples for custom collections, lazy evaluation, and streaming. Link to article: https://www.devleader.ca/2026/06/05/when-to-use-iterator-pattern-in-c-decision-guide-with-examples
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A fresh edition of Java Annotated Monthly has landed! The world of software development keeps moving at full speed, and this month’s selection helps you keep up without drowning in tabs. Inside, you’ll find hand-picked articles, podcasts, videos, and thought-provoking reads covering Java, Kotlin, AI, and the …
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Frameworks mean nothing, Link to article: https://devblogs.microsoft.com/all-things-azure/frameworks-only-matter-when-they-force-decisions
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Learn asp.net core api versioning with URL, header, and query string strategies. Complete guide with code examples using Asp.Versioning.Mvc in .NET 10. Link to article: https://www.devleader.ca/2026/06/04/api-versioning-in-aspnet-core-url-header-and-query-string-strategies
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