Rolling updates are the default Kubernetes deployment strategy — and for good reason. They give you near-zero downtime without requiring you to double your infrastructure. But they come with a catch most tutorials don’t explain: during the rollout, BOTH versions are live at the same time. In this video, we…

Welcome to Video 3 of the Immutability for Architects series! 🚀 In this episode, we explore CQRS — Command Query Responsibility Segregation — and why separating how your system writes data from how it reads data can unlock major gains in performance, scalability, and architectural clarity. You’ll see why a…

What is Event Sourcing, and why is immutability such a powerful idea in software architecture? 🤔 In this video, I explain Event Source Architecture in a practical and simple way, with a focus on immutable events 📦 Instead of constantly updating or deleting data, event sourcing stores every change as…

Most developers learn immutability as a coding concept… but stop there. That’s a mistake. In this video, you’ll discover why immutability isn’t just about objects in code — it’s a core architectural principle that scales across your entire system: We break down the 3 levels of immutability and show how…

Immutability is one of the most important concepts in modern software engineering — and one of the most misunderstood. In this video, we break down what mutability and immutability really mean, why mutation causes hidden bugs, and how immutable patterns make your code safer, easier to debug, and more scalable….

What happens if a user clicks “Pay Now” twice? Or if a network timeout causes a request to retry automatically? Without Idempotency, your API might process that payment twice. In this video, we explore the concept of Idempotency in API design—a critical property that ensures performing an operation multiple times…