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lru-cache

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lru-cache

A cache object that deletes the least-recently-used items.

  • 9.1.2
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
177M
decreased by-10.5%
Maintainers
1
Weekly downloads
 
Created

What is lru-cache?

The lru-cache package is a JavaScript library that provides a cache object that deletes the least-recently-used items. It is useful for storing a limited amount of data in a way that allows for fast retrieval of entries based on keys.

What are lru-cache's main functionalities?

Creating a cache instance

This code sample demonstrates how to create a new LRU cache instance with a maximum of 500 items and a maximum age of one hour for each item.

{"const LRU = require('lru-cache');
const options = { max: 500, maxAge: 1000 * 60 * 60 };
const cache = new LRU(options);"}

Setting and getting cache items

This code sample shows how to set a value in the cache with a key and then retrieve that value using the same key.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
const value = cache.get('key');"}

Checking if a key is in the cache

This code sample illustrates how to check if a key is present in the cache without updating the recent-ness or deleting it.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
const hasKey = cache.has('key');"}

Deleting a key from the cache

This code sample shows how to delete a specific key from the cache.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
cache.del('key');"}

Resetting the cache

This code sample demonstrates how to completely clear the cache.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
cache.reset();"}

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Package last updated on 01 Jun 2023

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