The Qlik Sense Repository Service (QRS) manages persistence and synchronization of apps and licensing, security, and service configuration data. The QRS is needed by all other Qlik Sense services to run and serve apps. It attaches to a repository database and manages the repository database synchronization in multi-node sites. In addition, the QRS stores the app structures and the paths to the binary files (that is, the app data stored in the local file system).