Simon Willison’s Weblog

The Virtues of Monitoring. Fantastic guide to the various levels of monitoring required for a modern web application. 13th January 2011, 4:26 am

Tracking Every Release. How Etsy use Graphite to monitor their continuous deployment releases. 10th December 2010, 10:04 am

Announcing Kong: A server description and deployment testing tool. An ultra simple website monitoring tool written in Django which makes it easy to manage a list of Twill scripts for testing different sites. It was developed at the Lawrence Journal-World—Eric showed me a demo if this a year or so ago and I’ve been hoping they would open source it. 18th November 2009, 12:47 pm

memcache-top. Useful self-contained perl script for interactively monitoring a group of memcached servers. 29th October 2009, 8:32 am

Graphite. Real-time graphing package for server monitoring, similar to RRDTool. Created by the team at Orbitz, using Django and ExtJS for the frontend and Cairo to generate the graphs. 28th June 2008, 11:53 pm

god—process and task monitoring done right. I have a long running animosity towards every process monitoring tool currently in existence; I’ll have to put this one through its paces and see if it sucks less. 29th March 2008, 10:20 pm

Wikimedia Grid Report. Wikipedia’s Ganglia monitoring page. 11th May 2007, 11:36 am