Systems Atlas

Search Engineering Guide

0. How to Read This

1. The Business & Product

2. Understanding the User Query

3. Indexing & Infrastructure

4. Data Foundation

6. Vector & Semantic Search

7. Training Embedding Models

9. UI Layout & Result Display

10. Ads in Search Results

11. Personalization

11.1 Why it's hard
11.2 User profiles
11.3 Session intent
11.4 Long vs Short term
11.5 Filter bubbles
11.6 Architecture
11.7 Privacy

12. Caching & Performance

13. System Architecture Design

14. Distributed Architecture

15. Evaluation & Metrics

16. Analytics & Feedback

17. LLMs in Search

18. Build from Scratch

19. Case Studies

20. Failure Modes

21. Org Structure

22. Startup Angle

23. Engineer's Mindset

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8. Personalization in Search

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