31 lines
682 B
JavaScript
31 lines
682 B
JavaScript
import { LRUCache } from "lru-cache";
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let maxKeys = 10000;
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const cache = new LRUCache({
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max: maxKeys,
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ttl: 4 * 24 * 60 * 60 * 1000,
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allowStale: false,
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updateAgeOnGet: false,
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updateAgeOnHas: false,
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});
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function scaleCache() {
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const mem = process.memoryUsage();
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const freeHeap = mem.heapTotal - mem.heapUsed;
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const ratio = freeHeap / mem.heapTotal;
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const newMax = ratio > 0.5 ? 20000 : ratio < 0.2 ? 5000 : 10000;
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if (newMax !== maxKeys) {
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maxKeys = newMax;
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cache.max = maxKeys;
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console.log(`[SCALER] freeHeap ${(freeHeap / 1e6).toFixed(1)}MB → maxKeys: ${maxKeys}`);
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}
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}
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setInterval(scaleCache, 60_000);
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scaleCache();
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export default cache; |