Joyent published an article a month or so ago about how they scaled a facebook application to support millions of hits. The application, BumperSticker, simply serves out customized images to users – online bumper stickers. It’s not hard, not complex and processes around 20 to 27 million page views a day. That’s a good number by anyone’s standards.
But, this dinky little Ruby on Rails app required the following architecture to do it
- 13 Application servers.
- 8 Static content asset servers
- 4 MySql databases
Thats a staggering 25 servers just to serve a bunch of images at a rate of no more than 320 hits per second.
This Might Explain Why Twitter Is Down So Often
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