Example Squid Deployment: WikiMedia

(Last Updated: January 2007)

Wikimedia began using Squid in 2004 to reduce the load on their web servers with almost immediate positive results. As a consequence, Wikimedia have been instrumental in helping Squid developers track down and fix important performance and HTTP compliance bugs. Wikimedia today test the latest release and pre-release code under real-world conditions and allow the Squid developers to produce high-quality open-source software which everyone can benefit from.

Wikimedia operate more than 50 Squid servers in 3 locations around the world (Florida, Amsterdam and Korea) serving almost three gigabits of Wiki traffic at peak times. (See this link for traffic and request statistics.)

The following graph has been taken from the above site and shows the request load over a 7 week period ending Week 3 2007. Take a close look at the Apache and Image backend requests compared to the served request rates.

Example Monthly Request Load; mid-Jan 2007

The following graph illustrates the total traffic flow served over the same seven-week period.

Example Monthly Traffic Load; mid-Jan 2007

Further information can be found at http://meta.wikimedia.org/wiki/Wikimedia_servers. Please note that this site is probably already out of date as Wikimedia is growing at a very fast rate; please browse the rest of the meta.wikimedia.org site for more information.






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