Software Engineering
"Coding is art; Software Engineering is discipline. It's applying engineering principles to software creation. SDLC, Agile, Testing - this is how we build scalable systems."
1. SDLC Models 🔄
Waterfall
Sequential. Req -> Design -> Dev -> Test -> Deploy. Rigid. Hard to go back.
Agile
Iterative. Sprints. Flexible. Customer feedback loop. (Scrum, Kanban).
2. Testing 🧪
- Unit Testing: Testing individual components/functions in isolation.
- Integration Testing: Testing how modules work together.
- System Testing: Testing the complete, integrated system.
- Acceptance Testing: Does it meet user requirements?
3. Design Patterns 🎨
Reusable solutions to common problems.
- Creational: Singleton, Factory, Builder. (How objects are created)
- Structural: Adapter, Facade, Proxy. (How objects are composed)
- Behavioral: Observer, Strategy, Command. (How objects communicate)
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