Last what I remember: https://blog.twitter.com/2015/handling-five-billion-sessions-a-day-in-real-time https://blog.twitter.com/2015/handling-five-billion-sessio

Last what I remember: https://blog.twitter.com/2015/handling-five-billion-sessions-a-day-in-real-time https://blog.twitter.com/2015/handling-five-billion-sessions... (not Google, Twitter, but still big company).