// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
dev.cdn-cache-ttl Calculator
Calculates CDN cache-hit ratio from TTL, asset update frequency, and traffic distribution across PoPs. Long CDN TTLs maximise cache efficiency — use cache-busting via URL versioning rather than short TTLs to enable long caching of static assets.
Inputs
Ttl Sec
Reference formula or conversion factor shown for context.
Invalidation Cost
Reference formula or conversion factor shown for context.
Requests Day
Reference formula or conversion factor shown for context.
Miss Cost
Reference formula or conversion factor shown for context.
Results
estimated hit rate
The value at the specified point or condition.
daily cache misses
CAC (customer acquisition cost) -- total sales and marketing spend divided by new customers acquired. Healthy LTV:CAC ratio is 3:1 or higher.
daily miss cost
The total monetary cost computed for the given inputs.
TTL in hours
The result expressed in hours. Divide by 24 to convert to days.