# Problem Definition

## Description

Amazon allows users to views the past week’s most popular products by category, based on purchases from other customers.

Design a feature like Amazon’s Sales Rank by Category.

- Features scope
- API design
- Pseudo code for specific components
- Data model/schema
- Back-of-the-envelope calculations
- Reference links
- Link to whiteboard or diagram such as https://sketchboard.me/new

## Notes

1. [Pramp - The Complete System Design Interviewer Guide](https://medium.com/@pramp/the-complete-system-design-interviewer-guide-e5d273724db8)
1. [GitHub - Donne Martin system-design-primer](https://github.com/donnemartin/system-design-primer/tree/master/solutions/system_design/sales_rank)