We’ve previously posted about measuring what’s happening on Redbubble, but with NewRelic’s new plugin system our lives just got a bit easier. We’ve been using NewRelic for a while now and frequently make use of it’s application and server monitoring for diagnosing problems. Generally the timescales it keeps data for are sane, integration with other tools is good and the UI is easy to use. There are already a plethora of plugins waiting for you to install, although NewRelic’s definition of a plugin is not what we expected. The plugins are small applications (agents) that poll your apps and report back to NewRelic using your licence key and an agent_guid for identification. So installation isn’t all that straightforward, depending on what you want to monitor.