Created
April 19, 2015 19:18
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Cache Performance Calculation
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| Cache is a net benefit in perf if time saved in cache hits exceeds time lost in cache overhead. | |
| L = Regular lookup | |
| H = Cache Hit | |
| M = Cache Miss | |
| R = Cache Hit Ratio (500 lookups/100 served from cache is 20%) | |
| H x R + M x (1 - R) < L |
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