import NodeCache from 'node-cache';

const cache = new NodeCache({ stdTTL: 345600, checkperiod: 3600, useClones: false });

function scaleCache() {
  const mem = process.memoryUsage();
  const freeHeap = mem.heapTotal - mem.heapUsed;
  const ratio = freeHeap / mem.heapTotal;

  const max = ratio > 0.5 ? 20000 : ratio < 0.2 ? 5000 : 10000;
  cache.options.maxKeys = max;
  console.log(`[SCALER] freeHeap ${(freeHeap/1e6).toFixed(1)}MB  maxKeys → ${max}`);
}

setInterval(scaleCache, 60_000);