recommendation-system

2 articles

2025-05-19 DATA

◆Big Data Deep Dive · Part 10

Big Data on AWS Deep Dive (Part 10): Full Architecture Blueprint and Cost Breakdown

The complete end-to-end architecture for a social app's data warehouse and recommendation system on AWS — every service mapped, with real monthly cost estimates and optimization strategies.

2025-05-16 DATA

◆Big Data Deep Dive · Part 7

Big Data on AWS Deep Dive (Part 7): Recommendation System Fundamentals — Funnel, Two-Tower, and PIT

Understand the recommendation system funnel (recall → pre-rank → rank → re-rank), two-tower retrieval architecture, and why Point-in-Time correctness matters for training samples.