Offline Capabilities

Experimental

Currently, together with the Polymer we offer to use Progressive Web Applications techniques such as web app manifest 2 to have native-like presence on the user’s home screen. See the manifest.json file in Polymer client module.

There are two main approaches:

Service Workers which primarily used to cache the app itself. Take a look at sw-precache-config.js file generated with Polymer client. In order to enable service worker generation set "addServiceWorker": true in polymer.json.

More info on how to setup and use service workers can be found here.

Local storage and Indexed DB which used to store data locally. This functionality exposed in the corresponding Polymer elements: app-localstorage-document app-indexeddb-mirror.