Home Archive Parallel code, Redis caching, and EF Core – .NET News Daily Issue #407 (Mar 9, 2026)

Editor's note

I kept this issue deliberately mixed: performance, architecture, data access, tooling, and security all show up here. The parallel code piece and the cache stampede article are a good pair if you care about why “faster” code sometimes isn’t. I also liked the EF Core polymorphic relationships writeup and the MSSQL VS Code extension update because both are practical and immediately useful.

Parallel code, Redis caching, and EF Core

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Today's Articles

Why Parallel Code Often Runs Slower

https://medium.com/@sweetondonie/why-parallel-code-often-runs-slower-a61b2a8d34a3?source=rss------dotnet-5

You added parallelism.

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Every Note-Taking App Tries Too Hard. I Fixed It.

https://medium.com/@cwhitelam/every-note-taking-app-tries-too-hard-i-fixed-it-9e99804b26cf?source=rss------dotnet-5

I’ve used a lot of note-taking apps. Apple Notes, Notion, Notability, a bunch of others. They all have the same problem: too many taps…

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DotnetFastMCP: Enforcing Multi-Factor Authentication (MFA) for Critical AI Tools ️

https://medium.com/applied-ai-for-app-devs/dotnetfastmcp-enforcing-multi-factor-authentication-mfa-for-critical-ai-tools-%EF%B8%8F-338884f0bb30?source=rss------dotnet-5

AI Agents are getting powerful. We are moving from “Chatbots that summarize text” to “Agents that move money” and “Agents that deploy… Continue reading on Applied AI for App Devs »

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How to Implement Redis Caching in ASP.NET Core?

https://www.c-sharpcorner.com/article/how-to-implement-redis-caching-in-asp-net-core/

Boost ASP.NET Core performance with Redis caching! Learn to implement it for faster response times, reduced database load, and improved scalability. Production-ready guide.

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The Million-Request Crash: Taming the “Cache Stampede” in Distributed Systems

https://medium.com/@shivanshgaur28/the-million-request-crash-taming-the-cache-stampede-in-distributed-systems-09b47c74184e?source=rss------csharp-5

How the “Thundering Herd” problem turns your caching layer into a database killer, and the advanced patterns top-tier engineers use to…

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Cracking the Code of Serverless Design: Patterns that Scale and Patterns that Fail

https://visualstudiomagazine.com/Articles/2026/02/23/Cracking-the-Code-of-Serverless-Design-Patterns-that-Scale-and-Patterns-that-Fail.aspx

Chad Green explores how intentional design patterns determine whether serverless architectures deliver on their promises of scalability, resilience, and cost efficiency.

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How to Avoid Code Duplication in Vertical Slice Architecture in .NET

https://antondevtips.com/blog/how-to-avoid-code-duplication-in-vertical-slice-architecture-in-dotnet

Learn how to manage code duplication in Vertical Slice Architecture with .NET. Discover when to share vs duplicate code, extract infrastructure concerns, push business logic into domain models, share

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MSSQL Extension for VS Code: Query Profiler, ADS Migration Toolkit & More

https://devblogs.microsoft.com/azure-sql/vscode-mssql-feb-2026/

The MSSQL Extension for VS Code continues to evolve, delivering features that make SQL development more integrated, more powerful, and more developer-friendly. In version v1.40.0, we're introducing th...

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The New Integrated Browser Has Arrived!

https://www.youtube.com/shorts/3Cum7Qatiz4

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How to Implement Redis Caching in ASP.NET Core for Performance Improvement?

https://www.c-sharpcorner.com/article/how-to-implement-redis-caching-in-asp-net-core-for-performance-improvement/

Boost ASP.NET Core performance with Redis caching! Learn how to implement Redis, reduce database load, improve response times, and enhance scalability. Optimize your .NET apps!

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Polymorphic Relationships in EF Core: Three Approaches

https://blog.elmah.io/polymorphic-relationships-in-ef-core-three-approaches/

Database schema and entity design are the pavement of most applications. If the entities are paved well, the application can provide great performance. Otherwise, it can lead to pitfalls. One key aspe...

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How Async and Await Work Internally in C#?

https://www.c-sharpcorner.com/article/how-async-and-await-work-internally-in-c-sharp2/

Unlock C#'s async/await secrets! Explore state machines, task-based patterns, and synchronization contexts for scalable, responsive apps. Avoid deadlocks and boost performance.

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.NET Memory Dump Analysis with DumpLinq

https://medium.com/@anders_pedersen/net-memory-dump-analysis-with-dumplinq-8a7a73f1c136?source=rss------dotnet-5

Long-running services that handle millions of requests will occasionally end up in a bad state and require a restart.

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LINQ in C#: Understanding the SelectMany() Operator [Part 1]

https://medium.com/@nikolaajdukovic/linq-in-c-understanding-the-selectmany-operator-part-1-50f1860dd760?source=rss------csharp-5

Flattening Hierarchies, One Sequence at a Time

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How to Implement Global Exception Handling in ASP.NET Core?

https://www.c-sharpcorner.com/article/how-to-implement-global-exception-handling-in-asp-net-core/

Master global exception handling in ASP.NET Core for robust, scalable APIs. Learn to implement middleware, custom exceptions, and standardized error responses.

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How to Detect Phishing from Text Input in C#/.NET

https://cloudmersive.medium.com/how-to-detect-phishing-from-text-input-in-c-net-997c56d43ad4?source=rss------dotnet-5

Phishing attacks are increasingly coming from unconventional inputs.

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How to Fix CORS Error in ASP.NET Core?

https://www.c-sharpcorner.com/article/how-to-fix-cors-error-in-asp-net-core/

Solve ASP.NET Core CORS errors! This guide explains CORS, why errors occur, and provides step-by-step solutions for secure, production-ready configurations. Learn to fix cross-origin issues!

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Jasen's take on today's picks

Why Parallel Code Often Runs Slower

Parallelism can surprise you: more threads isn’t automatically more throughput.

Every Note-Taking App Tries Too Hard. I Fixed It.

A practical Redis caching guide, plus a separate cache stampede article that covers the nasty edge cases.

DotnetFastMCP: Enforcing Multi-Factor Authentication (MFA) for Critical AI Tools ️

MFA for AI tools is the sort of guardrail teams need before agents start doing real work.

How to Implement Redis Caching in ASP.NET Core?

Vertical slices are clean until duplication creeps in; this piece shows where to draw the line.

The Million-Request Crash: Taming the “Cache Stampede” in Distributed Systems

The MSSQL VS Code update is a nice productivity bump for people living in SQL and .NET.

Cracking the Code of Serverless Design: Patterns that Scale and Patterns that Fail

EF Core polymorphic relationships are tricky; three approaches gives you options before you paint yourself into a corner.

How to Avoid Code Duplication in Vertical Slice Architecture in .NET

Async/await internals is a solid refresher if you want to remember what the compiler is actually generating.

MSSQL Extension for VS Code: Query Profiler, ADS Migration Toolkit & More

DumpLinq is the kind of low-level debugging tool you hope you never need, until you do.

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