🌱 System Design (Beginner) · Start Here · cozy lesson
What is System Design?
9 min · 1 min read · no scary math, promise
🤖
You’ve got this. Read a little, play a little — I’ll wait. No rush.
Framework (beginner)
- Clarify: users? reads/writes? latency?
- Estimate: 1M/day ≈ 12 rps, 1B ≈ 12k rps.
- API + flow diagram.
- Data: SQL? cache? queue?
- Scale: LB, replicas, sharding, failures.
No perfect — say “If read-heavy, cache; if write-heavy, shard.”
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Check your understanding
Correct answers earn XP (once each).
1. Good design answer shows…
2. SPOF means…
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