Cachier

---

Warning: Cachier is currently in beta. Only usable in the browsers that has Service Worker and Cache Storage.

Cache your content on clients browser with Cachier! Cachier, uses Cache Storage for caching static pages & files. The Service Worker technology serves it over cache for your clients. It also allows clients view offline pages.

Features

• The caching process controlled by owner
• Lightning fast page load
• Offline page views
• Less network requests

Table of Contents

• Install
• Cachier
  • API
  • Options
  • Listeners
  • Example
• Contributing
• Copyright

Install

You can install the library via npm.

npm install browser-cachier --save

or via yarn:

yarn add browser-cachier

Warning: You need to put cachier-service-worker.js to your sites root directory.

Cachier

API

Warning: add, remove, update and delete updates the current state of cachier. All events below are returning instance with a promise.

new Cachier(config: Object): Cachier

Cachier instance takes one argument which is config. The accepted configs described below.

cachier.add(urls: Array, callback: Function~response): Cachier

Adds provided url list to cache storage. If the provided url is in the cache already, it doesn't add it again. The url list returned from callback.

cachier.get(url: String <Optional>, callback: Function~response): Cachier

Get cache key from storage. If url argument not sent by user, it gets all otherwise gets single one. As a result it returns true or false according to its existence

cachier.update(urls: Array, callback: Function~response): Cachier

Updates the cache content of provided files. The url list returned from callback.

cachier.delete(urls: Array, callback: Function~response): Cachier

Delete provided url list from cache storage. The url list returned from callback.

cachier.clear(callback: Function~response): Cachier

Empty all cache storage. The deleted item list returned from callback.

Options

version {String|Number}

Sets a version to cache storage. After caching process completed for the first time, it will stay till user clears the cache storage. To overcome this, you can upgrade the version to a greater value. It will clear out of date storages and will set a new one.

serviceWorkerPath {String}

Cachier is using cachier-service-worker.js to create a layer between network requests and cache. File should be placed on your root directory to observe all scope. This parameter is the location of service worker.

debug {Boolean}

If it is true, it gives information on the console about what is going on.

Listeners

stateChange

Everytime change happens on cache storage over API events, stateChange event triggers. It is bound to document. With a simple eventListener you can catch-up state changes.

Example

import Cachier from 'browser-cachier';

let urlsToCache = ['/dummy/style.css', '/dummy/dummy.json'];
let cachier = new Cachier({ version: 1 });

cachier.add(urlsToCache, (response) => {
  console.log(response);
});

cachier.get(response => {
  console.log('Get: ', response);
});

cachier.get('/dummy/style.css', response => {
  console.log('Get: ', response);
});

// Remove specific cache items after 1500ms
setTimeout(() => {
  cachier.delete(urlsToCache, response => {
    console.log('Delete: ', response);
  });
}, 1500)

// Remove whole cache on page load
window.onload = function () {
  cachier.clear();
};

// Capture state change events
document.addEventListener('stateChange', function (result) {
    console.log('State: ', result.detail)
});

Contributing

Do not hesitate to contribute! It is a new born baby and open to ideas.

For more information, please checkout the contribution document.

Copyright

Copyright (c) 2017 tugayilik. See LICENSE.md for further details.