memo-cache.js

cache.js

This is a very very very simple memory cache which inherit from Map.
Use it just like the same with use Map.
Importantly, it can use in browser, and also in node environment.

Install

npm install memo-cache.js --save

Usage

const MemoCache = require('memo-cache.js');

const memoCache = new MemoCache();

const value = Promise.resolve('value');

// set a cache with expired after 60s;
memoCache.set('key', value, 60);

// get a cache value
const val = memoCache.get('key');

// delete a cache
memoCache.delete('key');

// check if exists
memoCache.has('key'); // return false

// change default ttl
memoCache.setTtl(10);
// change one key's ttl
memoCache.setTtl(10, 'key');

Also you can custom it with you own advanced features, by just inherit from it!

class CustomCache extend MemoCache {
    // do want you want to do
}

Class

MemoCache(ttl)

ttl is the short for time to live. default is 5s.

Almost methods is the same with Map, but set and setTtl:

• set(key, value, ttl=5)

Only add one argument ttl when compare with Map.prototype.set.

This ttl argument is used to set the expired time of this key. and the unit of ttl is second.

• setTtl(ttl[, key])

Set the default ttl or one key's ttl.

All the Map method see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map

Compatibility

In Node: use it anyway.*

**In Browser:**see caniusemaphttp://caniuse.com/#search=map

Test

npm test