10.2 How would you design the data structures for a very large social network like Facebook or Linkedln? Describe how you would design an algorithm to show the connection, or path, between two people (e.g., Me -> Bob -> Susan -> Jason -> You).
[CareerCup] 10.2 Data Structures for Large Social Network 大型社交网站的数据结构
原文：http://www.cnblogs.com/grandyang/p/4853252.html