mixi.jp scaling out with open source Batara Kesuma mixi, Inc. bkesuma@mixi.co.jp Introduction •Batara Kesuma •CTO of mixi, Inc. What is mixi? •Social networking service • Diary, community, message, review, photo album, etc. • Invitation only •Largest and fastest growing SNS in Japan Latest information - Friends new diary - Comments history - Communities topics - Friends new reviews - Friends new