EF Core filters, SignalR, security fixes
This issue covers EF Core 10 query filters, SignalR, background workers, API performance, security scanning, Azure Key Vault, and caching tips.
Jasen's top three picks
- 1 Named Query Filters in EF 10 (multiple query filters per entity)
milanjovanovic.tech
EF 10 named filters are a practical upgrade for cleaner soft-delete and multi-tenant querying.
- 2 The Silent Scalability Killers Hiding in Your .NET Code — 15 Fixes That Work
towardsdev.com
The ArrayPool and caching pieces are the kind of small changes that quietly pay off in production.
- 3 SignalR in ASP.NET Core — Build Real-Time Applications with Confidence
dotnetfullstackdev.medium.com
The Key Vault and security scanner articles are good reminders that secrets and guardrails belong early, not later.
Editor's note
I pulled together a very mixed set today: EF Core 10 named filters, SignalR guidance, security hardening, and a few performance pieces. The MCP C# SDK update and the Azure Key Vault article stand out for teams building with Microsoft’s latest platform pieces.
Today's articles
Named Query Filters in EF 10 (multiple query filters per entity)
milanjovanovic.tech
https://www.milanjovanovic.tech/blog/named-query-filters-in-ef-10-multiple-query-filters-per-entity
Read articleThe Silent Scalability Killers Hiding in Your .NET Code — 15 Fixes That Work
towardsdev.com
https://towardsdev.com/the-silent-scalability-killers-hiding-in-your-net-code-15-fixes-that-work-38bb072db40c
Topics: C# Performance
Read articleSignalR in ASP.NET Core — Build Real-Time Applications with Confidence
dotnetfullstackdev.medium.com
https://dotnetfullstackdev.medium.com/signalr-in-asp-net-core-build-real-time-applications-with-confidence-4fcc4440bda3
Topics: ASP.NET Core SignalR
Read articleHow to Use the Domain Event Pattern | DDD, Clean Architecture, .NET 9
medium.com
https://medium.com/@michaelmaurice410/how-to-use-the-domain-event-pattern-ddd-clean-architecture-net-9-76a6c314e610
Topics: Clean Architecture Domain-Driven Design
Read articleMCP C# SDK Gets Major Update: Support for Protocol Version 2025-06-18
devblogs.microsoft.com
https://devblogs.microsoft.com/dotnet/mcp-csharp-sdk-2025-06-18-update/
Read articleFrom Startup Tasks to Smarter Scheduling: Mastering Background Workers in .NET 8
blog.venturemagazine.net
https://blog.venturemagazine.net/from-startup-tasks-to-smarter-scheduling-mastering-background-workers-in-net-8-46c558d5fb99
Topics: .NET 8 Performance
Read article.NET + Angular: Trusted Tech Stack for Large-Scale Applications
medium.com
https://medium.com/@sparklewebhelp/net-angular-trusted-tech-stack-for-large-scale-applications-32486996556b?source=rss------dotnet-5
Topics: ASP.NET Core .NET Core
Read articleHow I Built a .NET Security Scanner Without a Security Team (And Blocked 90% of Vulnerabilities)
medium.com
https://medium.com/c-sharp-programming/how-i-built-a-net-security-scanner-without-a-security-team-and-blocked-90-of-vulnerabilities-ac0803ef5bea
Read articleLevel Up Your C# APIs: Pro Techniques for High-Performance REST Services
medium.com
https://medium.com/@saifullahhakro/level-up-your-c-apis-pro-techniques-for-high-performance-rest-services-90c3444b2a18
Topics: Performance REST API
Read articleSecure Your Secrets in .NET with Azure Key Vault
c-sharpcorner.com
https://www.c-sharpcorner.com/article/secure-your-secrets-in-net-with-azure-key-vault/
Read articleWhen Lifetimes Collide: A C# Developer’s Journey Through Transient, Scoped & Singleton
medium.com
https://medium.com/@brian.moraboza/when-lifetimes-collide-a-c-developers-journey-through-transient-scoped-singleton-40c88ec1afe2
Topics: C# Design Patterns
Read articleHow do I know my RAG system isn't missing anything important?
youtube.com
https://www.youtube.com/shorts/oTUU5OD7fgQ
Read articleDatabase Migration Strategies
codeopinion.com
https://codeopinion.com/database-migration-strategies/
Topics: Domain-Driven Design Design Patterns
Read articleStop Allocating Arrays in C#: Use These 10 Game-Changing ArrayPool Hacks
medium.com
https://medium.com/@ashokreddy343/stop-allocating-arrays-in-c-use-these-10-game-changing-arraypool-hacks-015a0f6007d9
Topics: C# Performance
Read article5 Deadly Health Check Mistakes .NET Developers Make (And How to Fix Them with Prometheus)
medium.com
https://medium.com/devs-community/5-deadly-health-check-mistakes-net-developers-make-and-how-to-fix-them-with-prometheus-87f3fb4f5ae6
Topics: Application Insights OpenTelemetry
Read article5 .NET Tips That Instantly Make Your Code Look Senior-Level
medium.com
https://medium.com/@freakyali/5-net-tips-that-instantly-make-your-code-look-senior-level-3b381895cf85
Topics: C# Design Patterns
Read articleResponse Caching in C#
medium.com
https://medium.com/@shreyans_padmani/response-caching-in-c-4498ef929cd4
Topics: C# Performance
Read articleC# Reflection Explained with Real Code Examples
c-sharpcorner.com
https://www.c-sharpcorner.com/article/c-sharp-reflection-explained-with-real-code-examples/
Topics: C# Design Patterns
Read articleBeyond Spaghetti Code: Mastering Clean Architecture for Enterprise .NET
medium.com
https://medium.com/@bhargavkoya56/beyond-spaghetti-code-mastering-clean-architecture-for-enterprise-net-90f860453e3d
Topics: Clean Architecture Domain-Driven Design
Read articleAuthentication in .NET — Part 2: Understanding Authentication Schemes
dilankam.medium.com
https://dilankam.medium.com/authentication-in-net-part-2-understanding-authentication-schemes-d43158e08c6f
Topics: Authentication Security
Read article