Design a recommendation system for an e-commerce website.

Question

Anonymous · Accepted Answer

functional requirements - user, recommendations (search, ads, widgets),
analytics

non functional requirements - how many DAU? would there be any periods where the
DAU might be high, for e.g. :- major events like upcoming launches, product
availabilities, discount programs etc.? scalability (scale during high
anticipated events or traffic), availability (consistency), durability
(inventory of the product)

Entities

User - entity engaging with the e-commerce website

clickstream - entity activity on the e-commerce website like logins, page
visits, search keywords etc.

providers -

events -

Calculations

Daily Active Users - 20 million, Daily Page Views - 60 million page views,
Queries Per Second  (QPS) - 60 million / (24 x 3600) = 1500 QPS

High level system design

User --> API Gateway --> Load Balancers --> Database (Dynamo DB, read heavy.
Postgres SQL - relational database, analytics etc.)

Design a recommendation system for an e-commerce website.

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