Auf
datacenterknowledge.com ist eine Facebook Data Center FAQ veröffentlicht worden. Diese fasst einige interessante Details zusammen. Ich Liste mal einige Dinge an und greife damit dem Artikel vor:
- 500 million active user
- 690 billion page views each month
- Facebook currently accounts for about 9.5 percent of all Internet traffic
- users add 100 million new photos every day
- People share more than 30 billion pieces of content on Facebook each month
- more than 1 million web sites and 550.000 applications using the Facebook Connect platform
- at least nine data centers on both coasts of the United States
- the company was running at least 60.000 server
- writtene primarily in the PHP programming language
- MySQL database infrastructure
- developed a program called HipHop to transform PHP source code into C++
- one of the largest MySQL database clusters anywhere
- the world’s largest users of memcached
- Services used in Facebook’s infrastructure include Apache Hadoop, Apache Cassandra, Apache Hive, FlashCache, Scribe, Tornado, Cfengine and Varnish
- company is now paying about $50 million a year to
lease data center space
- usually no more than 20 to 50 employees on site
Mehr Details gibt es natürlich im vollständigen Artikel. Es wird zum Beispiel auf weitere Data Center Kosten und auch Energieeffizienz eingegangen. Für alle interessierten also sehr lesenswert.