map-age-cleaner
Advanced tools
Package description
The map-age-cleaner npm package is designed to automatically remove expired items from a Map object in JavaScript based on a specified age. This is particularly useful for managing caches or temporary data storage where items should not persist indefinitely. The package works by wrapping a standard Map object and allowing the developer to specify a maximum age for the items. Once an item exceeds this age, it is automatically removed from the Map, helping to manage memory and data relevance efficiently.
Automatic cleanup of expired items
This feature allows for the automatic removal of items from a Map after they have been in the Map for a specified duration. The `maxAge` option is used to define how long (in milliseconds) an item should remain in the Map before being automatically removed.
const mapAgeCleaner = require('map-age-cleaner');
const myMap = new Map();
mapAgeCleaner(myMap, { maxAge: 10000 });
// Adds an item to the map
myMap.set('key', 'value');
// After 10 seconds, the item is automatically removedlru-cache is a cache object that deletes the least-recently-used items. It offers similar functionality in terms of managing temporary data with automatic removal, but it bases removal on usage frequency rather than a fixed time duration. This makes it suitable for different scenarios where the access pattern rather than the age of the data determines its relevance.
node-cache is a simple caching module with set, get and delete methods and it supports TTL (time to live) for entries. It provides functionality similar to map-age-cleaner by allowing entries to expire after a certain period. However, node-cache is a more comprehensive caching solution with additional features such as statistics about hits, misses, and keys stored.
Readme
Automatically cleanup expired items in a Map
$ npm install map-age-cleaner
import mapAgeCleaner from 'map-age-cleaner';
const map = new Map([
['unicorn', {data: '🦄', maxAge: Date.now() + 1000}]
]);
mapAgeCleaner(map);
map.has('unicorn');
//=> true
// Wait for 1 second...
map.has('unicorn');
//=> false
Note: Items have to be ordered ascending based on the expiry property. This means that the item which will be expired first, should be in the first position of the
Map.
Returns the Map instance.
Type: Map
Map instance which should be cleaned up.
Type: string
Default: maxAge
Name of the property which olds the expiry timestamp.
Map implementation with expirable itemsSet implementation with expirable keysMIT © Sam Verschueren
FAQs
Automatically cleanup expired items in a Map
We found that map-age-cleaner 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.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
The Python Software Foundation has secured a 5-year sponsorship from Fastly that supports PSF's activities and events, most notably the security and reliability of the Python Package Index (PyPI).
Security News
LDAPjs, an LDAP Client and Server API for Node.js, was decommissioned after its maintainer received an abusive email from a user, raising concerns about this form of abuse as a potential attack vector.
Security News
CISA launched a new project called Vulnrichment to enrich CVEs with details that help prioritize patching and mitigation efforts, as the NVD backlog of unenriched CVEs awaiting analysis surpasses 10,000.