Software Engineering for Internet Applications

Failover

If RDBMS or load balancer fail we are dead.
A good load balancer will tell you how to set up multiple ones.
For the RDBMS you can:
1. Make sure it never fails: multiple power supplies, RAID, etc. Follow Oracle's instructions.
2. Buy multiple ones and run something like Oracle's Parallel Server.

José M. Vidal .

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