Software engineering and systems design
HE · 50 minutes · Design a maintainable system.
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Our learning goal
Design a maintainable system.
Your turn: Choose one thing you would like to understand by the end.
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My lesson notes & project
Full teaching script
- Today: Software engineering and systems design. Our goal: Design a maintainable system.
- Take one idea at a time. Pause after each sentence; ask for repetition whenever you need it.
- Separate concerns, depend on interfaces not implementations, and make state explicit. Choose monolith before microservices unless the team boundaries demand otherwise. Design for observability — logs, metrics, traces — and treat tests as the executable specification.
- Together: choose one example from the explanation and show how it works. What do you notice?
- Your turn: Draw the component diagram for an app you use daily.
- Reflect: what made sense, and what would you like explained differently?
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