Facebook-Timeline

Wired reports that Piantino Serkan, who will be responsible for engineering offices in New Yok Facebook, argued that the reason of Facebook to choose MySQL is as a solution to deal with the memory requirements of the Timeline feature because it basically works in a different way of news feeds.

Because the Timeline feature is more focused on organizing the data neatly than continually issuing updates in real time, then MySQL is the best choice for applications of this Timeline. Although the data collected in the same location as the data is stored (not through a network connection), the data will still be set by using MySQL instead of other alternatives such as NoSQL or Hadoop HBase. » Read more: The reason Facebook using MySQL for Timeline Features