Thread by @_rodrigomd

Structural Design Patterns

🎭 Facade

💡Provides a simplified front face interface to hide a complex underlying code or architecture.

🧵👇

#100DaysOfCode #CodeNewbies #Developers #programming #code #developers

Benefits🤩

✅ improves readability and usability by hiding more complex interactions behind a common and simple interface
✅ provides a context-specific way to interact with a more general functionality
✅ It can be the initial change in a monolith to a more loosely coupled code

What tries to solve?

▫️ Make the subsystems easier to use
▫️ Merge logics and hidden into a more understandable method
▫️ Limit the logic exposed
👇

Example 1: We want to mimic an Uber app and to do so, we need a way to draw a route on a map.

We can provide a simplified service to hide interactions with the map, create routes, parse coordinates, calculate the midpoints, fit to streets, etc.

Example 2: We need to scope an EmailService to specialized to send marketing emails to current customers 📧💌

We could create a MarketingEmail class with templates and validations of customers' emails. The class will use the original EmailService to send the email.

Example 3: We could limit the interaction to a whole component in a loosely coupled architecture.

Think about an Order microservice, with their own service to process orders and a repository. We could expose an OrderComponent with limited access to internal parts.