- Example: https://github.com/deanhume/pwa-update-available
- from react : https://create-react-app.dev/docs/making-a-progressive-web-app/
- cache control : https://developers.google.com/web/ilt/pwa/caching-files-with-service-worker
- https://developers.google.com/web/fundamentals/primers/service-workers/lifecycle