Rails Application Visualization - Dan Manges's BlogBefore we went live with the new Rails site at CarePages, we decided to use Munin for monitoring. We needed to write a few custom plugins to visualize application health. Fortunately, Munin plugins are really easy to write - I'll provide the source for a couple of them. We wrote plugins for Passenger process status, Passenger memory stats, Rails response time, Rails hits, the ARMailer queue, and t
