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appolo-cache

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appolo-cache

In memory lru cache

  • 8.0.0
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Appolo lru cache

Build Status Dependencies status NPM version npm Downloads Known Vulnerabilities

Fast and simple lru cache for node.js written in typescript.

The cache will remove the oldest used item when reached max capacity

Installation:

npm install appolo-cache --save

Usage:

import {Cache} from "appolo-cache";
 
//max items in cache is 5 and all the items will expire after 1 second
 let cache  = new Cache<string,string>({maxSize:5,maxAge:1000})

cache.set("test", "value")
cache.get("test") // "value"

cache.set("test2", "value",2000) // will expire after 2 secs
cache.reset();    // empty the cache

Options

  • maxSize - The maximum size of the cache, default 1000
  • maxAge optional set maximum age in ms of all cache items. if set getting expired item it will return null

API

set(key, value, [maxAge])

Set the value of the key and mark the key as most recently used. if maxAge is passed the item will expire after maxAge ms.

get(key)

Return the value of the key. If the key is not found or expired return null. mark the key as most recently used.

peek(key)

return the value of the key If the key is not found or expired return null. will not update recently used.

del(key)

Deletes a key out of the cache.

reset()

Reset the cache and delete all items.

has(key)

Return true if a key is in the cache, will not update recently used

forEach(function(value,key,cache), [this])

Loop over the cache items

keys()

Return an array of the keys in the cache.

values()

Return an array of the values in the cache.

size

Return the size of the cache.

prune()

Delete all expired items.

pop()

Remove and return the least recently used

maxAge

getter setter cache max age.

maxSize

getter setter cache max size.

maxSize

getter setter cache max size.

hit(key)

Mark the key as most recently used.

ttl(key)

Get the ttl time left of the key item.

expire(key,maxAge)

Update the expire time of the key item.

License

MIT

Keywords

FAQs

Package last updated on 01 Nov 2020

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