Design a News Feed System like Facebook

http://blog.gainlo.co/index.php/2016/03/29/design-news-feed-system-part-1-system-design-interview-questions/

http://blog.gainlo.co/index.php/2016/04/05/design-news-feed-system-part-2/

https://www.quora.com/What-are-the-best-practices-for-building-something-like-a-News-Feed