Consistency Semantics for File Sharing
Determines how modification of data is observable to other users.
- Writes to a file by a user are immediately visible to other users that have this file open.
- Supports a mode of sharing where users share even the current location pointer into the file.
Session Semantics (Andrew File System):
- Writes to a file by a user is not visible to other users.
- Once the file is closed, the changes are visible only to new sessions.