lite-lru

A simple LRU cache module that is optimized for frequent serialization, only supports number keys and uses binary search to locate the entries

Installation

$ npm install --save lite-lru

Usage

const LiteLRU = require('lite-lru');
 
const size = 5;
const lru = new LiteLRU(size);
const key = lru.add('any value');
 
// Later you can get back the value:
lru.get(key); // > 'any value'
lru.set(key, 'some other value');
lru.delete(key); 
lru.get(key); // > undefined

Note that get, set and delete methods use binary search

There's a toJSON method defined which basically returns the internal array. You can pass that array to LiteLRU constructor:

new LiteLRU(50, JSON.parse(JSON.stringify(new LiteLRU(50))))

You can set callback for when a value is added, so that you can save the cache somewhere:

lru.onAdd = () => {
  localStorage.cache = JSON.stringify(lru); 
}

License

MIT © Olindata BV