The map-cache npm package is a simple cache to store key-value pairs. It is particularly useful for storing the results of expensive function calls or any other calculations that you don't want to repeat unnecessarily. It's a lightweight and fast caching solution.
Set and Get Values
This feature allows you to store a value with a specific key and then retrieve that value using the key.
{"const MapCache = require('map-cache');
const cache = new MapCache();
cache.set('foo', 'bar');
const value = cache.get('foo');
console.log(value); // Output: 'bar'"}Check Existence of Key
This feature allows you to check if a key exists in the cache.
{"const MapCache = require('map-cache');
const cache = new MapCache();
cache.set('foo', 'bar');
const hasKey = cache.has('foo');
console.log(hasKey); // Output: true"}Delete a Key
This feature allows you to delete a key-value pair from the cache.
{"const MapCache = require('map-cache');
const cache = new MapCache();
cache.set('foo', 'bar');
cache.delete('foo');
const value = cache.get('foo');
console.log(value); // Output: undefined"}Clear the Cache
This feature allows you to clear all key-value pairs stored in the cache.
{"const MapCache = require('map-cache');
const cache = new MapCache();
cache.set('foo', 'bar');
cache.clear();
const value = cache.get('foo');
console.log(value); // Output: undefined"}lru-cache is an npm package that implements a cache object that deletes the least-recently-used items. It is similar to map-cache but with the added feature of maintaining a limited size and evicting entries that have not been recently used.
node-cache is an in-memory cache module for Node.js. It is similar to map-cache but provides additional features like TTL (time to live) for entries, statistics about the cache's performance, and events for when entries expire.
memory-cache is another simple in-memory cache for Node.js applications. It is similar to map-cache but also offers the ability to set a timeout on cached items, after which they are automatically removed.
Basic cache object for storing key-value pairs.
Install with npm:
$ npm install map-cache --save
Based on MapCache in Lo-dash v3.0. MIT License
var MapCache = require('map-cache');
var mapCache = new MapCache();
Creates a cache object to store key/value pairs.
Example
var cache = new MapCache();
Adds value to key on the cache.
Params
key {String}: The key of the value to cache.value {any}: The value to cache.returns {Object}: Returns the Cache object for chaining.Example
cache.set('foo', 'bar');
Gets the cached value for key.
Params
key {String}: The key of the value to get.returns {any}: Returns the cached value.Example
cache.get('foo');
//=> 'bar'
Checks if a cached value for key exists.
Params
key {String}: The key of the entry to check.returns {Boolean}: Returns true if an entry for key exists, else false.Example
cache.has('foo');
//=> true
Removes key and its value from the cache.
Params
key {String}: The key of the value to remove.returns {Boolean}: Returns true if the entry was removed successfully, else false.Example
cache.del('foo');
You might also be interested in these projects:
get, set, del, and has methods for node.js/javascript projects. | homepagePull requests and stars are always welcome. For bugs and feature requests, please create an issue.
Generate readme and API documentation with verb:
$ npm install verb && npm run docs
Or, if verb is installed globally:
$ verb
Install dev dependencies:
$ npm install -d && npm test
Jon Schlinkert
Copyright © 2016, Jon Schlinkert. Released under the MIT license.
This file was generated by verb, v0.9.0, on May 10, 2016.
FAQs
Basic cache object for storing key-value pairs.
The npm package map-cache receives a total of 10,321,089 weekly downloads. As such, map-cache popularity was classified as popular.
We found that map-cache demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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