Chapter 8Introducing Capacity
Back before the dot-com crash, one IBM commercial perfectly captured the paradox of deploying systems. A group of anxious entrepreneurs gathered around a screen to observe the launch of their new site. The “orders received” counter ticked upward a few clicks, and the group cheered. Their cheers turned into uncomfortable silence when the counter started to zoom toward the stratosphere.
I know the feeling. It is the same sinking, helpless feeling that the launch team had on the ecommerce site from the previous chapter. On the other hand, I’ve seen a system improve over eighteen months to handle four times the demand with two-thirds of the original hardware. The improved capacity came entirely from software design ...
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