The document discusses the history and concepts of noSQL databases. It begins by discussing the hype around noSQL and then provides a brief history of database models from the 1960s to today. It discusses key concepts like CAP theorem, BASE, eventual consistency, and polyglot persistence. The document also discusses common anti-patterns when using relational databases for certain tasks and proposes noSQL alternatives. Overall, the document provides an overview of noSQL databases while discussing both benefits and tradeoffs compared to relational databases.