Nobody teaches this deeply in college, but every experienced developer eventually understands why it matters.
Clean architecture is not about writing “fancy” code.
It’s about building software that remains maintainable as complexity grows.
Here’s SOLID in the simplest way possible:
S — Single Responsibility Principle
One class should have one responsibility.
Avoid creating massive “God classes” that handle everything.
O — Open/Closed Principle
Software should be open for extension, closed for modification.
Add new features without constantly changing stable code.
L — Liskov Substitution Principle
Child classes should properly replace parent classes.
If a subclass breaks expected behavior, the design needs improvement.
I — Interface Segregation Principle
Keep interfaces small and focused.
Classes should not implement methods they never use.
D — Dependency Inversion Principle
Depend on abstractions, not concrete implementations.
This makes systems more scalable, testable, and flexible.
The real value of SOLID isn’t theory.
It’s reducing chaos when projects become large and teams start scaling.
What’s your opinion on SOLID Principles?
Essential engineering practice or sometimes overused?
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