Welcome to a Wednesday where the power of .NET Core architecture is as undeniable as the effect of caffeine on a seasoned developer—sharp, quick, and pushing the limits of what’s possible. Today, we’re diving into EF Core performance, C# null checks, and SignalR real-time apps, helping you level up your C# code and master asynchronous programming. Get ready to optimize your ASP.NET applications and explore cutting-edge topics like Kafka C# consumption, API response modeling, and Zero Trust Architecture. This mid-week tune-up for your Azure security skills will keep your projects running smoothly, with fresh insights into IAsyncEnumerable and EF DbContext. As you scroll through, think of it as your go-to guide for keeping your C# code lean, efficient, and production-ready!
List of Article’s
Beyond Basics: Advanced Techniques for EF Core Performance
https://medium.com/@S_Jathurshan/46e9412a16bc
Performance and Tracking Continue reading on Write A Catalyst »
The Hidden Costs of Null Checks in Generic C# Code
Lets dive deep into one of the subtle yet impactful performance pitfalls in C# programming—null checks in generic C# code. While these checks may seem straightforward, improper handling can lead to hidden performance issues, especially with value types. In this article, we explore how boxing during null checks affects memory usage and performance and reveal efficient techniques like EqualityComparer<T>.Default and modern C# 7+ null checks. Whether you’re optimizing C# code or working on performance-critical applications, understanding these nuances will help you write faster, cleaner, and more memory-efficient code. Join us as we dissect the best practices for handling null checks in generic methods, with a focus on performance.
Variables in C#: What They Are and How to Actually Use Them
Mastering variables in C# is the first step to writing clean, efficient code in any .NET application—from console apps to full-stack projects. This beginner-friendly article breaks down data types, naming conventions, declaration vs assignment, and the use of constants in C#, helping new developers build a solid programming foundation. Whether you’re just starting with C# programming or revisiting variable best practices, this guide simplifies the essentials for real-world usage..
Is the Generic Repository Pattern holding back your EF Core app? In this insightful piece, Keivan Damirchi shares how directly using DbContext and DbSet in application services can simplify architecture, reduce boilerplate, and unleash the full power of Entity Framework Core. Learn how this shift improves LINQ query flexibility, enhances unit testing, and aligns your codebase with modern ASP.NET Core best practices—while also considering trade-offs like ORM coupling.
How to Implement Zero Trust Architecture on Azure Using C#
Explore how to implement Zero Trust Architecture on Azure using C# with this comprehensive guide covering core concepts like Azure Active Directory, RBAC, Azure Key Vault, Managed Identity, and Conditional Access. Learn how to secure your .NET applications with real-world examples, from enforcing multi-factor authentication to securing APIs with JWT and monitoring with Azure Monitor. This hands-on article is essential reading for developers and architects looking to build secure, modern cloud-native apps following Zero Trust best practices on Microsoft Azure.
Consuming from Kafka without Consumer Groups in C#
Learn how to consume Kafka topics without using a consumer group in C# by leveraging manual partition assignments with the Confluent.Kafka dotnet client. This advanced guide walks through secure Kafka client configuration, metadata retrieval, and consuming messages across multiple partitions—perfect for horizontal scaling scenarios or applications needing full-topic consumption. Whether you’re building real-time systems, bypassing subscribe-based consumer logic, or managing offsets manually, this walkthrough helps you break free from group coordination and fully control your Kafka consumption in C#.
Dive into real-time communication with SignalR in .NET, where this hands-on guide shows how to build a fully functional real-time chat app using ASP.NET Core and C#. Learn how SignalR simplifies complex WebSocket logic by offering built-in support for persistent connections, user groups, and auto-reconnection, while enabling features like chat rooms and message broadcasting with minimal code. This tutorial also walks through setting up a JavaScript SignalR client, implementing CORS policies, and extending chat functionality—all perfect for developers looking to master SignalR real-time apps in the .NET ecosystem.
Build more maintainable and predictable web APIs with a consistent API response model in C#. This practical guide introduces a reusable generic response wrapper pattern that standardizes success flags, typed errors, and uniform data containers across your ASP.NET Core applications. Learn how to streamline error handling, improve frontend integration, and return structured responses using describer classes, validation logic, and clean controller code—all while aligning with modern API development best practices.
A simple way to create sample data #vscode #ai #copilot
We have been using keywords like virtual, sealed, and static in modern C# development almost daily. Most of us understand the basic… Continue reading on codenp »
.NET AI Community Stand Up – .NET Tokenizers & Real-World MCP in Action
Performance comparison of JSON Schema implementations for .NET
Explore a detailed performance comparison of JSON Schema validators for .NET, featuring benchmark tests across top libraries like JsonSchema.Net, NJsonSchema, and the newer LateApexEarlySpeed.Json.Schema. This article analyzes CPU time and memory allocation across four key validation scenarios using the official JSON Schema Test Suite, helping developers evaluate the best JSON validation library for .NET based on performance. Whether you’re building schema-driven APIs or integrating data validation into enterprise .NET apps, these results offer valuable insights into choosing the right tool for high-efficiency JSON schema validation.
Implement client assertions for OAuth client credential flows in ASP.NET Core
Learn how to implement client assertions in OAuth2 client credentials flow using ASP.NET Core and Duende IdentityServer, replacing shared secrets with RSA-signed JWTs for stronger client authentication. This article walks through generating signed tokens, securing the OAuth client using X.509 certificates, and configuring the IdentityServer with AddJwtBearerClientAuthentication for JWT-based validation. Ideal for .NET developers building secure, machine-to-machine APIs, this guide aligns with modern OAuth 2.0 security standards and showcases a production-ready setup using Duende’s token management packages and custom client assertion flows.
Going beyond singleton, scoped, and transient lifetimes—tenant, pooled, and drifter
Discover how to go beyond the standard lifetimes of Singleton, Scoped, and Transient in ASP.NET Core Dependency Injection, with this deep dive into custom service lifetimes like Tenant-scoped, Pooled, and Time-based (drifter) services. This article not only explores the theoretical discussion sparked by The Breakpoint Show but also implements a practical thread-safe timed service factory using .NET 8’s TimeProvider. Whether you’re building multi-tenant applications, optimizing memory via pooled DI patterns, or experimenting with expiration-based service instancing, this guide expands your toolbox for advanced dependency injection in .NET.
Explore the rise of Vibe Coding, a new AI-driven development paradigm where tools like GitHub Copilot, ChatGPT, and Cursor AI empower anyone to build apps using simple prompts instead of manual code. Coined by Andrej Karpathy, vibe coding leverages generative AI and LLMs to accelerate software development, from writing frontend and backend logic to generating test cases and full prototypes. Whether you’re a startup founder, designer, or seasoned developer, this approach transforms how we build software—making prompt engineering, creativity, and validation the new essential skills in the AI-powered coding era.
Write Once, Query Anywhere: Harnessing the Power of LINQ Across Multiple Databases
Discover how to harness the full power of LINQ in C# to write clean, type-safe, and database-agnostic queries that work across SQL Server, PostgreSQL, and MySQL without rewriting logic. This deep dive explores how LINQ operators like Select, GroupBy, Join, Where, and OrderBy simplify querying in memory or across databases, enhancing developer productivity while maintaining performance and readability. Whether you’re building apps with Entity Framework or querying complex datasets, this article shows how “Write Once, Query Anywhere” with LINQ streamlines data access in modern .NET development.
To handle or catch run-time errors in application we use Exception handlers. However, throwing exceptions is costly in terms of… Continue reading on Nerd For Tech »
10 Game-Changing Features in C# 14 Preview (and How to Try Them Today)
Learn how to configure a custom App Icon and SplashScreen in .NET MAUI using SVG files and project-level settings within the .csproj file. This tutorial from the GamesCatalog MAUI series walks you through setting image resources, tint colors, and build actions to style your mobile app consistently across platforms. Ideal for .NET MAUI developers, the article also marks the end of phase one — a local-only game rating app powered by the IGDB API — and sets the stage for backend integration in the next development phase.
How I Used Domain-Driven Design to Fix My Messy Clean Architecture — And Why You Probably Should…
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