RailsMetrics is a new Rails engine which stores everything that is happening inside your application in the database, so you can profile each request, besides creating charts, statistics and extract useful information.
It was a challenging project due to its threaded nature and I will share a couple things I learned during the process in this blog later. For now, you can watch the screencast below to see what it does and how to install it:
As said in the video, getting it released is just the first step and now it’s your turn to fork and improve it by providing a better layout, creating new reports, charts, etc!
For RailsMetrics, I chose to use g.raphael since I can easily manipulate the objects it creates and it is the one which looks better (at least imho ;)). However it has poor documentation and the default charts have poor customization options compared to the other two libraries, so you end up tweaking the chart by hand (which was fine in my experience).
I’m waiting for your pull requests, enjoy!