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dev.cdn-bandwidth-cost Calculator
Calculates CDN bandwidth cost and cache offload savings from origin traffic, CDN pricing, and cache hit rate. A CDN with 90% hit rate reduces origin traffic by 90% — at $0.08/GB origin egress vs $0.01/GB CDN, the cost saving is substantial for high-traffic sites.
Inputs
Monthly Visitors
Reference formula or conversion factor shown for context.
Avg Page Size Mb
Age in completed years. Many health and fitness formulas adjust for age.
Cache Hit Rate Pct
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Cdn Cost Per Gb
Reference formula or conversion factor shown for context.
Results
monthly CDN cost
The total monetary cost computed for the given inputs.
total data transfer (GB)
The combined total across all inputs and components.
CDN-served (GB)
Sample size or count used in the calculation.
cache hit rate
Fraction of requests served from cache without hitting the origin. Above 80-90% is generally good; below 50% means the cache is not effective.
origin data saved (GB)
The total amount saved compared to the baseline scenario — cost savings, time savings, or resource savings.