In seven years of rapid growth Facebook has become today's most popular 
social network, redefining digital identity and the basic set of communication 
channels for people worldwide. Many unique engineering challenges were handled 
along the way: building products extremely quickly while keeping the high 
quality of the service and the low cost of the hardware that supports it, 
allowing hori-zontal scaling of highly interconnected datar ,anking news items 
for divergent user population with and allowing application )from a social 
revolution to the party next door( large spectrum of interestsdevelopers and 
website owners to extend the social graph using an open platform API. 
In this talk, we will peek inside Facebook engineering, 
describing some of these challenges and their solutions.