If There are many, which One Do I Go To?
Request Redirect Protocol
- oofs () routines supply alternate AMS location
oofs routines responsible for update synchronization
- Typically, read/only access provided on copies
- Only one read/write copy conveniently supported
- Client must declare intention to update prior to access
- Lazy synchronization possible
Good mechanism for largely read/only databases
Load balancing provided by an AMS collective
- Has one distinguished member recorded in the catalogue