System and method for the synchronization of a file in a cache

A computer system comprising:

• a client computer processor;
• a client computer network connection device coupled to the processor and operable to connect to a network;
• a client computer memory coupled to the client computer processor;
• a client computer operating system having an operating system file management system;
• stored instructions executable by the client computer processor to provide a user space cache manager, the user space cache manager configured to:
• establish a local cache on an existing volume at a location in a file system;
• log in to a server on behalf of a first user;
• communicate with the server over the network to download files from the server;
• store the downloaded files as cached files in the local cache at the client computer;
• interface with the file management system of the client computer operating system to cause an automatic notification feature to provide the user space cache manager automatic notifications with respect to the local cache;
• in response to receiving an automatic notification with respect to the cache, determine that a cached has been modified;
• and
• based on the determination that the cached file has been modified, send changes to the cached file to the server to synchronize the changes to a file repository.