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By mswatcher
via openmymind.net
Submitted: Jul 26 2013 / 12:31

A cache is a mixed blessing. On the one hand, it helps make things faster. On the other, it can become a crutch, or worse, an excuse. Furthermore, caches can deceive us in two ways. First, they can easily hide a system's true performance characteristics, masking poor design until things start to fail. Secondly, while a cache might exposes a simple interface, getting the most of it requires that you pay close attention to details and have a thorough understand of how your system works.
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