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sent 2025-06-05 21:18:57 -07:00
parent ff50de3064
commit b622f3cb9b
1 changed files with 15 additions and 14 deletions
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29
others/scaler.mjs
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@ -1,36 +1,37 @@
import { LRUCache } from 'lru-cache';
import fs from "fs";
import path from "path";
import { LRUCache } from "lru-cache";
let maxKeys = 10_000;
let cache = makeCache(maxKeys);
let cache = makeCache(maxKeys);
function makeCache(maxEntries) {
return new LRUCache({
maxSize: maxEntries,
ttl: 60_000,
allowStale: false,
ttl: 60_000,
allowStale: false,
updateAgeOnGet: false,
updateAgeOnHas: false,
updateAgeOnHas: false
});
}
function scaleCache() {
const { heapUsed, heapTotal } = process.memoryUsage();
const freeHeapRatio = (heapTotal - heapUsed) / heapTotal;
const newMax = freeHeapRatio > 0.5
? 20_000
: freeHeapRatio < 0.2
? 5_000
: 10_000;
const newMax = freeHeapRatio > 0.5 ? 20_000 : freeHeapRatio < 0.2 ? 5_000 : 10_000;
if (newMax !== maxKeys) {
maxKeys = newMax;
cache = makeCache(maxKeys);
console.log(`[SCALER] freeHeap ${( (heapTotal - heapUsed)/1e6 ).toFixed(1)}MB → maxKeys: ${maxKeys}`);
console.log(`[SCALER] freeHeap ${((heapTotal - heapUsed) / 1e6).toFixed(1)}MB → maxKeys: ${maxKeys}`);
}
}
setInterval(scaleCache, 60_000);
scaleCache();
export { cache };
const watchPath = path.join(process.cwd(), "public");
fs.watch(watchPath, { recursive: true }, () => {
cache.clear();
});
export { cache };