Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

Series

.NET Core Web API 36 Angular 31 JavaScript Basics 19 JavaScript Intermediate 18 JavaScript Advanced 16 TypeScript Basics 14 TypeScript Intermediate 14 TypeScript Advanced 12 Entity Framework Core 28 Dapper 16 Git & GitHub 29 Web Security (OWASP Top 10) 21 LLM Fundamentals 20 C# Fundamentals 20 Object-Oriented Programming in C# 16 C# Collections and Generics 11 LINQ 17 Asynchronous Programming in C# 17 Advanced C# 14 C# Versions 6

14 posts found

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Backend PART 13

Dependency Injection Basics in C#: Lifetimes, the Container and Captive Dependencies

Constructor injection with Microsoft.Extensions.DependencyInjection, singleton/scoped/transient, the container's disposal duty, captive dependencies and ValidateScopes, multiple registrations, TryAdd and factories.

7 Nov 2026 9 min 7

Backend PART 14

Unit Testing in C#: xUnit, Theory/InlineData and Testable Code

The hidden dependencies behind a flaky test, an xUnit test project, Fact and Assert, Theory/InlineData/MemberData, taking time from outside with IClock, and pitfalls like decimal InlineData and async void.

7 Nov 2026 8 min 9