Levy Carneiro

Boo Box, the ad network, released a layout of their web servers’ infrastructure. It seems the beast is growing fast and this diagram shows how they’re coping with the challenge.

Here are some things I found very interesting:

• Separate servers for reading and writing (MySQL). This way you can optimize servers for a specific purpose (read or write), since the reads and writes aren’t competing with each other anymore in the disk or memory;
• Serve static files from a different domain to speed things up is well-known, but serving them right from the RAM is new to me. However some people disagree with caching files in memory, beyond what the OS already does in this field. The other good thing is that Nginx is a super fast web server, and it’s replacing Apache in many scenarios;
• The use of a queue server for handling time-consuming tasks is paramount for horizontal scaling. Everything that takes more than a few miliseconds (or do some sort of processing) should be ran in an asynchronous way.

It’s very nice of them to share this layout. Thanks guys!

Tags: Scaling, servers, sysadmin

This entry was posted on Saturday, May 30th, 2009 at 8:02 PM and is filed under Scaling, Systems Administration. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.