C# and .NET by Nick Cosentino

Dev Leader: C# and .NET
Software Engineering Content

Practical, in-depth content for software engineers and technical leaders. Learn C#, .NET, software architecture, AI-assisted development, and engineering leadership with guidance you can apply on your team today.

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Hybrid Search for RAG in .NET: BM25, Vectors, and Reciprocal Rank Fusion

Learn how hybrid search RAG .NET combines lexical BM25 and dense vector candidates in one Azure AI Search request with reciprocal rank fusion.

Aug 24, 20269 minute read

Async Pipelines in C#: Await, Cancellation, and Completion

async pipeline C# cancellation async await CancellationToken Task IAsyncDisposable

Build correct async pipelines in C# with sequential awaits, propagated cancellation, observed tasks, explicit completion ownership, and safe async disposal.

Aug 22, 202611 minute read

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AI Can Write The Code -- What Part Do You Keep? - Dev Leader Weekly 154

Dev Leader Weekly Dev Leader Software Engineering Newsletter Newsletter

Welcome to another issue of Dev Leader Weekly! In this issue, I discuss protecting what you love about software development while AI handles more of the work.

Aug 22, 20269 minute readUpdated Aug 23, 2026

Weekly Recap: C# Specification Pattern, Vector Search, and Type-Safe Pipelines [Aug 2026]

This week covers the Specification Pattern with EF Core, type-safe C# pipelines, and vector search with Azure AI Search. Plus videos on effective tech leadership, end-to-end testing, career changes, and working with AI.

Aug 22, 20264 minute read