MA

BOTEC

Back-of-envelope Estimation · System Design · System Design Interviewing

Settings

Unit system

Traffic

Daily active users (DAU)

millions

Avg requests / user / day

Read : write ratio

Peak traffic multiplier

Data

Avg request payload

KB

Avg object / record size

KB

Data retention

Replication factor

Infrastructure

Per-server RPS capacity

requests per second per server

Cache hit ratio