Back-of-the-Envelope Capacity Estimation — Roadmap Step & Resources
Estimating QPS, storage and bandwidth needs from rough usage assumptions
- Level: beginner
- Estimated time: 1 days
- Roadmap: System Design
Before this step
Mini projects
- Estimate the storage and QPS needed for a service with 50M daily active users
Interview questions
- How would you estimate the storage required for a photo-sharing app over 5 years?
Study resources
- Back-of-the-Envelope Calculations (Article) — The System Design Primer's guide to estimating scale using rough, order-of-magnitude math.
- Back of the Envelope Estimation for System Design Interviews (Video) — A practical walkthrough of estimating QPS, storage and bandwidth for a system design interview.
Part of
- Core System Design Concepts — section
- System Design roadmap — the full learning path