The reference link: http://stackoverflow.com/questions/13890595/apache-jackrabbit-vs-rolling-your-on-content-repository There are several benefits to using an existing JCR implementation, such as Jackrabbit or ModeShape . First and foremost, you immediately get lot of functionality for free: Hierarchical data storage - Lots of data is naturally hierarchical, and a JCR repository allows you to organize your data in the way that your applications will access it. Anything keyed by a URI, date/time, categories, or folder structures are natural fits for storing in a repository. Use a standard Java API - The JCR API is standard Java API with a TCK, meaning your applications can rely upon standard behavior and not be tied to a particular JCR implementation. Flexible schema enforcement - You can choose whether and where the node structure and property values are enforced by how you define and use node types. Data evolution - Your data structure...