Cassandra was released in 2008. Facebook hit 1 billion users ~ 2012, and 2 billion ~ 2017. Back when Cassandra was released, they had a 'mere' 100 million users.
Thanks for the correction! So the more correct statement would be that Facebook scaled to 100 million users with PHP, MySQL, and Memcache, and then to a billion users with Cassandra and Haystack, and then built all the other stuff after their first billion?
Yeah, there’s also a lag sometimes ie. They write the paper 1-2 years after building the system. They’ve published some really interesting papers over time. If you filter by year you can see them all!
