Mert Özen Further With Every Line

Blog

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

ALL All 527 posts
BE Backend 137 posts
FE Frontend 124 posts
DO DevOps 29 posts
DB Database 44 posts
AI Artificial Intelligence 20 posts
SEC Security 21 posts
DSN Software Design 88 posts
ARC Software Architecture 64 posts
QA Testing & Quality 0 posts
PM Project Management 0 posts
CS Computer Science Fundamentals 0 posts
SEO SEO & GEO 0 posts
DEV Developer Tools 0 posts
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 Microservices 10
2 posts found #dynamic-consistency-boundary
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The Hard Parts of Event Sourcing: GDPR, Unique Constraints, and Dynamic Consistency Boundaries
Software Architecture PART 09

The Hard Parts of Event Sourcing: GDPR, Unique Constraints, and Dynamic Consistency Boundaries

Keep personal data out of events and encrypt it with crypto-shredding when it must stay; protect cross-stream uniqueness with a natural-key stream id or an Inline projection with a unique index, and rules spanning two aggregates with a Dynamic Consistency Boundary. AES-GCM crypto-shredding with Marten 9, a race between two concurrent registrations, a campaign quota with DcbConcurrencyException, and not calling external services on replay.

7 Nov 2026 14 min 3
The Evolution of DDD and Common Mistakes: From the Blue Book to Dynamic Consistency Boundaries
Software Architecture PART 14

The Evolution of DDD and Common Mistakes: From the Blue Book to Dynamic Consistency Boundaries

DDD's most common mistake is skipping the strategic design left at the end of the Blue Book and taking only tactical words like entity, repository, and base class. A history from Evans's 2003 book to the DDD Reference, Vernon's aggregate rules, EventStorming, Team Topologies and Khononov, and the Dynamic Consistency Boundary that questions the aggregate; with an in-memory DCB example and a reading route after the series.

7 Nov 2026 13 min 5
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