Chapter 10. Controlling Change in Production Environments
If you know neither the enemy nor yourself, you will succumb in every battle.
—Sun Tzu
In engineering and chemistry circles, the word stability is defined as a resistance to deterioration, or alternatively as a constancy in makeup and composition. Something is “highly instable” if its composition changes regardless of the actual rate of activity within the system, and it is “stable” if its composition remains constant and it does not disintegrate or deteriorate. In the hosted services world, as well as with enterprise systems, one way to create a stable service is simply to not allow activity on it and to limit the number of changes made to the system. The term “changes,” in the previous ...
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