系统设计: CDN & Recommendation System.

Design Netflix Content Delivery System. (CDN). https://www.youtube.com/watch?v=LkLLpYdDINA

US Internet traffic 34% was used by Netflix in 2014.

 

 

 

Recommendation System.  https://www.youtube.com/watch?v=Eeg1DEeWUjA

Algorithm in Recommendation system: 

Content Based filtering. (compare features of objects itself.)

Collaborative filtering. ( features + people response to the objects)

Started by send survey of people preference, and then start to collect user's data, behavior, watching history, comments. etc.

In real word: Hybrid Recommended system using both of above two algorithms.

 

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