IMC

IMC is an In-Memory Cache key-value store.

import cache from 'imc';
cache.set('key', 'value');
cache.get('key'); // 'value'

Installation

NPM:

$ npm install imc --save

Yarn:

$ yarn add imc

CDN:

<script src="https://unpkg.com/imc@latest/umd/imc.min.js"></script>
<script>
  var cache = window.IMC.cache;
  var Cache = window.IMC.Cache;
</script> 

Usage

Import Module

// CommonJS
const { Cache, cache } = require('imc');
 
// ES Modules
import cache, { Cache } from 'imc';

Global Cache

You can either use the global cache store:

// cache is also a default export
import { cache } from 'imc';

Local Cache

Or create a local cache store:

import { Cache } from 'imc';
const cache = new Cache();

When instantiating a new cache store, the initial state can be set:

const cache = new Cache({ key: 'value' });

Set

Set key-value:

cache.set('key', 'value');

Set key-value using object:

cache.set({ key: 'value' });

Set multiple keys and values, which are merged to the store object:

cache.set({
  key: 'value',
  answer: 42,
});

Get

Get value from key:

cache.get('key'); // 'value'

If key-value does not exist, it will return undefined:

cache.get('invalid'); // undefined

To differentiate from a key-value that hasn't be set, you can use null:

cache.set('invalid', null);

Delete

Delete key-value from store:

cache.delete('key');

Clear

Clear store:

cache.clear();

This means the store becomes an empty object:

cache.get(); // {}

Testing

Run tests with coverage:

$ npm test

Run tests in watch mode:

$ npm run test:watch

Lint files:

$ npm run lint

Fix lint errors:

$ npm run lint:fix

Release

Only collaborators with credentials can release and publish:

$ npm run release
$ git push --follow-tags && npm publish

License

MIT