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Abstract

A new approach is proposed that contemplates systems and methods to support offline file system synchronization and sharing with cloud storage via a virtual file system (VFS) configured to provide a complete view of all file files/file folders in a user's account. The VFS separates the storage of the files and their metadata into two primary databases—a staging database where local changes to the files are stored and a file database, which is a cloud-synchronized copy of path structure and metadata information of the files and file folders. The VFS first pulls/retrieves the latest version of a file to be modified from the cloud based on metadata in the file DB and updates the locally-stored version of the file based on the version retrieved from the cloud. Once the file is modified by the user locally via a client (even when the client is offline), the VFS commits and consolidates all the changes made by this and possibly other users to the file in the staging DB before synchronizing the changes to the cloud.

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First Claim