Backup and caching modules Sample Clauses

Backup and caching modules. The backup and caching modules interact with the DAM in order to create copies of home content following users’ directions and interests. In this document we will refer to “backup” when talking of reliable, encrypted copies of user content encoded in blocks and uploaded to a storage area (possibly outside the home network). Conversely, we will refer to caching when talking of multiple copies of the same content disseminated among neighboring gateways for the purpose of having the content readily available when needed (though not in a reliable way, i.e., the content may need to be downloaded from other sources if not found in the caching system). Backup and caching modules both exploit the unified content access in order to manage all the resources in a transparent way, saving into the backup (or cached content) all the information about user-generated and file-system-level metadata along with the resources themselves. They also query the DAM database to retrieve the user-generated tags associated to each resource, to be stored and saved as metadata. These metadata will then allow the selection of appropriate destinations for the backed-up content (e.g., DAM-level user-generated tags such as “wildlife pictures” could trigger the backing up of users’ photos toward storage facilities shared by federated users with similar interests).