Whether we like it or not, computers occasionally fail
and the applications running on them may die.
The Front End Servers
within a site monitor the operational status of every Back End Server.
If a Back End Server fails, the failure is detected and Front Ends
immediately re-direct client requests to other Back End Servers running
the same application. Thus, Eddie provides seamless continuity of
service in the event of failures.
If a Front End Server fails, the
failure is again automatically detected and the IP address of the
failed unit migrates to another Front End.