Level 6: Applied: cases, FDE scenarios, mocks · L6.3 AI-era cases
Recommendation system
Design candidate generation + ranking with a feature store.
15 min · Pro
What you take away
- Ten million items cannot be scored per request, so retrieval narrows to about a thousand candidates and only then does an expensive model rank.
And 3 more inside the class, in Pro.
How the class is laid out
- The prompt
- Requirements and the numbers
- The design
- Three decisions
- The twist
- Check your understanding