Editor's note
I pulled a varied mix this time, with a strong lean toward things you can apply right away. The ASP.NET Core performance piece and the Polly article stand out for shipping better APIs under real load, while the HttpClientFactory testing guide is a nice reminder that good tests need isolation, not the internet.
ASP.NET Core performance, resiliency, and refactoring
Jasen Fici
October 16, 2025
Picture this: It's Thursday, the unsung hero of the workweek, poised like a seasoned change-tracking git commit—because who doesn't appreciate a well-managed history? As a smart .NET developer, you've navigated the pull requests and build errors that Wednesday threw your way, and now you're perfectly positioned to harness today's curated reads like an expertly optimized LINQ query. Let these insights be the turbo boost your week craves, each article a trusted sidekick as you tackle the code with the prowess of a development pro.
Today's Articles
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Jasen's take on today's picks
High Performance and Scalability in ASP.NET Core
Practical guidance for squeezing more out of ASP.NET Core without hand-waving.
C# at Scale: What I Learned Moving from Side Projects to Production Systems
A useful bridge from hobby code to production reality, with performance and memory lessons.
Mocking HTTP Calls with HttpClientFactory in .NET
Solid testing pattern for external HTTP dependencies: deterministic and maintainable.
Announcing a new OData.NET serializer
Worth a look if you care about serialization overhead in OData-heavy apps.
A straightforward Web API overview for readers filling in the basics.
AI coding planning gets a structured twist here; interesting for workflow, not just autocomplete.
7 No-Nonsense Ways I Keep Duplicate Messages From Wrecking My Queues (with a real .NET 9 example)
Multiple anti-duplication ideas for queues, with a real .NET 9 angle.
Modernizing Legacy C# Code: Refactoring Strategies Every Developer Should Know
Good refactoring advice for older C# codebases that need cleanup without a rewrite.
C# for Cloud-Native Development
Cloud-native framing with Azure in the mix; useful for architecture conversations.
Scaling .NET APIs with Ease: How I Used C# to Handle Millions of Requests
Another load-handling article, focused on caching and concurrency at scale.
Understanding Filters in ASP.NET Core: A Comprehensive Guide — Part 1
Filters are an important ASP.NET Core hook, and this guide starts from the fundamentals.
Interfaces in .NET: Building Robust and Maintainable Applications
Interfaces as a design tool rather than just a language feature.
A quick refresher on constructor variations, best kept in perspective.
.NET, .NET Core, and .NET Framework: Key Differences and Their Past and Present
Helpful if you need the .NET family tree explained to teammates or newcomers.
ASP.NET Core and Microservices Architecture
Microservices plus minimal APIs, gRPC, and observability—dense with architecture touchpoints.
9 Easy Wins for Rock-Solid Fault Handling in .NET 9 with Polly (With Real Code You Can Ship Today)
Resiliency basics with Polly, presented in a very deployable way.
The Evolution of .NET: From Framework to Future
A broad look at .NET’s evolution; more context than tactics.
Validate Email Addresses with Regular Expressions in C#
Regex email validation: simple topic, but easy to get wrong in practice.
20+ Code Hacks to Instantly Boost Your Productivity in .NET Core
Productivity tips are mixed here, but some shortcuts may still save time.
Building Elasticsearch Queries in .NET
Elasticsearch query building with NEST, useful if search is in your stack.