// multi-utility computation suite · offline · instant · precise
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│ computation suite │
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dev.runtime-cache-ttl Calculator
Calculates the optimal cache TTL from data freshness requirements, origin request rate, and cache miss cost. Cache TTL is a staleness vs load tradeoff — too short hammers the origin; too long serves stale data.
Inputs
Ttl
Reference formula or conversion factor shown for context.
Rps
Reference formula or conversion factor shown for context.
Update
Cycles per second (Hz). Audible sound: 20 Hz – 20 kHz. Make sure units match what the formula expects.
Results
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.
reqs per TTL window
Sample size or count used in the calculation.
origin req/sec
Sample size or count used in the calculation.
origin load saved
The total amount saved compared to the baseline scenario — cost savings, time savings, or resource savings.
staleness risk
How outdated the data or cache may be. High staleness risk means results may no longer reflect current conditions.
requests/min
Throughput in requests per minute. Multiply by 60 to get per-hour, or divide by 60 to get per-second (RPS).
daily capacity
Reference formula or conversion factor shown for context.