Databases
Mastering PostgreSQL Row-Level Security (RLS) for Rock-Solid Multi-Tenancy
How to Safeguard SaaS Data from Cross-Tenant Leaks by Enforcing Strict Tenant Isolation at the Database Layer
Rico Fritzsche
Entrepreneur, Coder & Writer | Proven Expertise in Domain-Driven Design, CQRS/ES & Event Storming | Web API Design | Get in touch!
Software Engineering
Why Building Software Feels Broken
Understand the rising failure rates in software and how to bring projects back to purpose-driven execution.
Rust
Zero-Abstraction SQL: Why Raw Queries Beat ORMs for Clarity and Control
Boost Clarity and Control with Raw SQL Queries in Rust and Beyond
Immutability in Data Flows for Safer, Simpler Code
How Immutable Data Improves Reasoning, Safety, and Testability
Programming
Applying Functional Core and Imperative Shell in Practice
A Simple Rust Example for Testable Logic and Clear Boundaries
Programming
Simplify & Succeed: Replacing Layered Architectures with an Imperative Shell and Functional Core
Streamline Testing by Eliminating Mocks and Focusing on Pure Functions
Programming
Beyond the Hype: Event Modeling, Event Sourcing, and Real Choices
Understanding the Domain Before Adding Complex Storage Patterns
Programming
Slow Down, Understand the Domain, and Then Build
Why Becoming a Domain Expert Matters
API
Why Code is the Wrong Layer for Rate Limiting
A practical take on keeping it out of your service code.
Software Architecture
Beyond the Hype: Rediscovering the Value of Relational Data Models
The Practical Benefits of Database Constraints in Production Systems
Software Architecture
Cutting Through the Noise: A Reflection on the True Essentials of Software Development
Escaping the Hype: The Art of Staying Focused on Value
Geofencing
Scalability in High-Traffic Environments
Real-World Challenges in Location-Based Intelligence
