Backend

REST vs GraphQL compared side by side. Performance, flexibility, learning curve, and when to choose which API architecture. With practical examples.

Firebase as a backend for your app: costs, benefits, limitations, and when Firebase is actually worth it. An honest take from an app developer.

What is OAuth? I explain OAuth 2.0, social login with Google and Apple, the authorization flow, and why OAuth is safer than classic logins. With a Flutter example.

What is CI/CD? I explain continuous integration and continuous deployment with practical examples. Pipeline setup, GitHub Actions, and why CI/CD makes your project better.

A visual insight into the backend architecture of a real production app with thousands of users. Cache, Queue, Kubernetes and more explained simply.