How to Calculate Cache Size
What is Cache Size?
A cache size calculator determines the optimal cache memory allocation based on working set size, hit rate targets, and available memory. A 90% cache hit rate typically requires caching the most-accessed 10–20% of data; adding more cache beyond that yields diminishing returns.
Step-by-Step Guide
- 1Estimate hot data size
- 2Calculate hit rate assumptions
- 3Size cache accordingly
Worked Examples
Input
2GB hot data, 80% hit rate
Result
2GB cache needed
Add 20% buffer
Common Mistakes to Avoid
- ✕Wrong parameters
- ✕Missing adjustments
Frequently Asked Questions
What does this calculator do?
Set parameters
How do I use this calculator?
Run calculation
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