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 ## Blogs and other reading links
 - [Notes on Distributed Systems for Young Bloods](http://www.somethingsimilar.com/2013/01/14/notes-on-distributed-systems-for-young-bloods/)
+- [High Scalability](http://highscalability.com/) Several architectures of huge internet services, for eg [twitter](http://highscalability.com/blog/2013/7/8/the-architecture-twitter-uses-to-deal-with-150m-active-users.html), [whatsapp](http://highscalability.com/blog/2014/2/26/the-whatsapp-architecture-facebook-bought-for-19-billion.html)
 - [The C10K problem](http://www.kegel.com/c10k.html)
 - [On Designing and Deploying Internet-Scale Services](http://static.usenix.org/event/lisa07/tech/full_papers/hamilton/hamilton_html/)