5.6.7. Offline Capabilities
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Warning
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Experimental! The technologies listed below are not supported by all browsers yet (e.g. service workers are not yet implemented in Safari). |
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:
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Service Workers which primarily used to cache the app itself. Take a look at
sw-precache-config.jsfile generated with Polymer client. In order to enable service worker generation set"addServiceWorker": trueinpolymer.json.
More info on how to setup and use service workers can be found here.
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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.