The document discusses debugging Grails database performance issues. It notes that while GORM provides easy data access from anywhere in a Grails application, this can lead to unclear data access patterns and unintended queries. It then introduces the MVC Mini Profiler tool for tracking database queries and tying them to specific parts of the codebase. The document demonstrates this tool and outlines plans to implement more of its features for Grails and support non-SQL stores.