TLRU-Cache

Time aware least recently used cache store

Installation

npm i tlru-cache

Usage

import { TLRUCache } from 'tlru-cache';
 
const tlruCache =  new TLRUCache({
  // optional values
  maxStoreSize: 5,
  timeToUseMs: 60 * 1000,
});
 
const value = tlruCache.get('value', () => 42);
// won't calculate again
const sameValue = tlruCache.get('value', () => 42);

Documentation

Constructor object properties:

Name	Type	Default value	Description
maxStoreSize	number	1000	Store capacity
maxAgeMs	number	60 * 60 * 1000 (1 hour)	Record time to use in milliseconds. Put <= 0 for non-expiring records.

Methods:

get<TKey, TValue>(key: TKey, calculate: (key: TKey) => TValue, maxAgeMs: number = null): TValue

Arguments:

• key: record key

• calculate: function to get record. receive key as argument

• maxAgeMs: record time to use. if presented, override constructor option