Practice
50M requests/day is roughly how many average QPS? (round number)
1. A chat app has 1B messages/day at ~100 bytes each. Storage per year is closest to…
2. Why bother estimating read:write ratio?
3. Which belongs on a user-facing hot path?
Answered 0 / 3
Explain Estimate QPS and yearly storage for a service with 5M DAU, each posting 2 comments/day (≈400 bytes) and reading 100.