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THE FEUTEX TOOLKIT

CDN Origin Offload

Estimate origin fetch volume from byte-weighted cache hit ratio and cache-fill duplication.

Networking workspace● Runs in your browser
01 Your input
02 Your result
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FormulaOrigin traffic = gb*(1-hit/100)*factor; Net traffic offloaded = gb-gb*(1-hit/100)*factor

Made for real tasks

  • Estimate origin fetch volume from byte-weighted cache hit ratio and cache-fill duplication.
Explore step-by-step workflows →

Worked example

Inputs

Viewer traffic per day
10000 GB
Byte cache hit ratio
92 %
Origin fetch amplification
1.2 times

Expected results

Origin traffic
960 GB/day
Net traffic offloaded
9040 GB/day

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter viewer traffic per day, byte cache hit ratio, origin fetch amplification in the displayed units.
  2. Calculate the scenario, then compare it with measurements before changing a system.

Try this example

{
  "gb": 10000,
  "hit": 92,
  "factor": 1.2
}

Accuracy and scope

Use byte hit ratio rather than request hit ratio; amplification includes duplicate cache fills.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.