Tuesday, July 9, 2013 [Tweets] [Favorites]

Twitter Architecture

Todd Hoff:

It happened gradually so you may have missed it, but Twitter has grown up. It started as a struggling three-tierish Ruby on Rails website to become a beautifully service driven core that we actually go to now to see if other services are down. Quite a change.

Twitter now has 150M world wide active users, handles 300K QPS to generate timelines, and a firehose that churns out 22 MB/sec. 400 million tweets a day flow through the system and it can take up to 5 minutes for a tweet to flow from Lady Gaga’s fingers to her 31 million followers.

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