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Stateless and Call-Back Filing Systems
Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.
Shared file systems must deal with multiple versions of files. For example, if two people request a file and make changes to it at the same time, three versions of the file exist-one per user and the original at the server. One solution is to lock a file so that only one person can edit it at a time. There are two synchronization methods that can also be used:
AFS (Andrew File System) and CIFS (Common Internet File System) are call back systems. As clients change files, other clients holding copies of the files are called back and notified of changes. See "File Systems."
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.