· Journey

Recommendation Systems Journey

A 6-stage path from basic ranking models to real-time serving at scale. Pick a stage and dive in.

1
Basic Ranking
- Designing a recommendation system from scratch
  Retrieval vs ranking, candidate generation, freshness vs relevance — the tradeoffs every real recommender lives by.
2
Collaborative Filtering
In progress.
3
Embeddings
- How Transformers actually attend
  Beyond the textbook diagrams — what a single attention head is really computing, how multi-head splits the world, and why scaling laws keep rewarding bigger context.
4
ANN Search
In progress.
5
Retrieval Systems
In progress.
6
Real-time Serving
In progress.