Every great library you've ever used was built with the Facade Design Pattern.
AWS SDK, GORM, Stripe, the Go stdlib itself — all Facades.
In this video, we break down the Facade Pattern in Go by building a real
OpenWeatherMap API library from scratch.
You'll learn:
✅ What a Facade is — and why a library is just a Facade with a package name
✅ How to hide HTTP complexity behind a clean two-line caller API
✅ Go JSON struct tags — what omitempty means and why it matters
✅ Production patterns: dependency injection in Facades, error wrapping
✅ Testing a Facade's subsystems in isolation (without hitting the real API)
✅ The difference between Facade and Adapter patterns
✅ Anti-patterns: the God Facade, thin Facades, and error swallowing
After this video, you'll think about library design differently —
and every SDK you touch will make more sense.
