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 Solution Patterns 22 SOLID and Design Principles 12 Clean Code 13 Design Patterns 23 UML and Modeling 18 Introduction to Software Architecture 9 Clean, Onion and Hexagonal Architecture 8 Vertical Slice Architecture 6 Domain-Driven Design 12 CQRS and Event Sourcing 10 Messaging and Event-Driven Architecture 9 Modular Monolith 2 Microservices 10 UI Architecture Patterns 9 Architecture Decisions 7 System Design 15 Distributed Systems Fundamentals 11 Background Jobs and Scheduled Jobs 11 Working with Message Queues 14 Logging in .NET 10 Caching 10 Real-time Applications 9 ASP.NET Core MVC and Razor Pages 13 CI/CD Fundamentals 8 GitHub Actions 16 Jenkins 12 Web Servers and Hosting 12 Deployment Strategies 9 Kubernetes 19 Authentication and Authorization 18 ASP.NET Core Security 8 Frontend Security 9 API Security (OWASP API Top 10) 11 AI with .NET 14 RAG 13 AI Agents and MCP 14 Test Strategy 4 Unit Testing 13 SDLC (Software Development Life Cycle) 6 Agile Mindset 6 Scrum 11 Kanban 7 Introduction to Product Management 9 SEO Fundamentals 7 Technical SEO 12 GEO (Generative Engine Optimization) 7 Algorithms and Data Structures 22 Debugging and Problem Solving 13

2 posts found #performance

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Backend PART 02

High-Performance Logging: the LoggerMessage Source Generator, IsEnabled and Allocation Cost

Even a disabled LogDebug line allocates 128 bytes per call because of params object[] and boxing; the [LoggerMessage] source generator brings that to zero with typed parameters and an IsEnabled check. BenchmarkDotNet measurements, an event catalog, primary constructors, [LogProperties] and the cost of the Telemetry package swapping the generator.

8 Nov 2026 12 min 4

Backend PART 08

HTTP Logging in ASP.NET Core: AddHttpLogging, the W3C Logger and the Cost of Request/Response Bodies

Use HTTP logging in production with one event per request, bodies off, and an interceptor that logs the body only on errors. The real defaults of AddHttpLogging, the header allow list, CombineLogs, [HttpLogging] and WithHttpLogging, an IHttpLoggingInterceptor that logs bodies on 4xx/5xx, the W3C logger file and the measured cost of body logging: 85 KB of allocations per request instead of 8 KB.

8 Nov 2026 9 min 3