Published on 2006-04-11 10:26:41

Brian Fioca, the guy behind Jobby, have written a very interesting article on O'reilly network titled Digg PHP's Scalability and Performance. The article pointed to scalability and performance issues of both Digg and Jobby websites. Brian have interviewed Owen Byrne, Senior Software Engineer at digg.com, and came with many important points about scalability of web 2.0 applications. The main issues faces by Digg are related to database, and scaling the current load to 10 times is mainly switching to a different database platform. The article is mainly comparing issues between PHP and Java, but some important points that should interest us are :

1- Jobby and Digg are written in PHP and using mysql as backend database
2- Jobby is hosted on Linux server with a 2GHz processor and 1GB of RAM
3- Digg uses 3 web servers and 8 small database servers
4- Digg gets 200 million page views per month

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