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memory-storage

v1.2.2

Published

a simple cache using lru algthorim

Downloads

16

Readme

Memory storage

Build Status

A simple memory storage based LRU algthorim.

Install

npm install memory-storage

APIs

LRUCache

Intialize a LRUCache instance.

  • size {Number}: cache size, default is 10

Usage

const LRUCache = require('memory-storage');
const cache = new LRUCache();

or

const LRUCache = require('memory-storage');
const cache = new LRUCache(100);

set

Set <k, v> to cache.

  • key {String}: key name
  • value {Any}: To be cached value

Usage

cache.set('a', 1);  // Set number
cache.set('a', {}); // Set object
cache.set('a', []); // Set array
cache.set('a', 'a'); // Set string

setex

Set <k, v> to cache and add expire time(seconds).

  • key {String}: key name
  • value {Any}: to be cached value
  • expire {Number}: expire seconds

Usage

cache.set('a', 1, 100);

expire

Expire key in seconds

  • key {String}: key name
  • expire {Number}: expire seconds

Usage

cache.expire('a', 100);

get

Get value by key, return real value or undefined.

  • key {String}: key name

Usage

cache.get('foo');

rpush

Push value to named key's array.

  • key {String}: key name
  • value {Any}: To be cached value

Usage

cache.rpush('a', 'a');

rpop

Pop value from named key's array and return it.

  • key {String}: key name

Usage

cache.rpush('a', 1);
console.log(cache.rpop('a'));

Test

jasmine

TODO

  • support more apis like redis command.