Monitor slow MySQL queries with Scout
About a month ago I started using Scout to monitor Forumwarz from a performance standpoint. Scout can be very useful for finding performance bottlenecks in your Rails apps! If you set it up with the Ruby on Rails Request Monitoring plugin, it will email you all of the requests that are running slowly. I found this invaluable when debugging performance problems on the site. I was surprised to find out that selling items, for example, was by far the slowest thing you could do! I’d never received a single complaint about it, because the operation always finished in 5-6 seconds, but behind the scenes it was taxing the processor! ...