4.8 Unbalanced Capacities
The trade press is bursting with stories about utility computing. The concept is fabulous: as demand on your application changes, it automatically gets more CPU, memory, and I/O resources assigned to it. Who does the assigning? Some entity in the infrastructure monitors your applicationâs performance and adds resources whenever it sees that performance doesnât meet the required service levels. This âmaster control programâ lurks in the background, measuring your systemâs performance and dynamically reallocating resources. It is supposed to guarantee that you will never have a resource crunch again. Of course, ...
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