@thermopylae/lib.cache/dist/policies/eviction/gdsf.js

Modular cache.

import sizeof from 'object-sizeof';
import { BaseLFUEvictionPolicy } from "./lfu-base.js";
class GDSFEvictionPolicy extends BaseLFUEvictionPolicy {
    sizeOf;
    cacheAge;
    constructor(cacheMaxCapacity, cacheBackendElementsCount, sizeOfInBytes) {
        super(cacheMaxCapacity, cacheBackendElementsCount);
        this.sizeOf = sizeOfInBytes || sizeof;
        this.cacheAge = 0;
    }
    onUpdate(entry) {
        this.onHit(entry); 
    }
    get initialFrequency() {
        return this.cacheAge;
    }
    computeEntryFrequency(entry, entryScore) {
        return Math.round((entryScore / this.sizeOf(entry.value)) * 10) / 10 + this.cacheAge + 1;
    }
    onEvict(frequencyOfTheEvictedEntry) {
        this.cacheAge = frequencyOfTheEvictedEntry;
    }
}
export { GDSFEvictionPolicy };