The document discusses the journey of a company's Cassandra platform team from a state of insanity to sanity. Key points: 1) The team initially struggled with multi-tenancy, configuration drift, too many metrics and heroes causing issues. This led to low morale. 2) To regain sanity, the team committed to agreements, pipeline everything, focus on current problems and use their graph database proof-of-concept. 3) The graph database helped provide recommendations, find misconfigurations and indirect views of connected data. Over 300 systems were rebuilt simplifying issues. 4) Learnings included paying attention to the data model, partitioning graphs, using graphs for indirection views and designing for rebuildability