Service Worker in Action
https://caniuse.com/#feat=serviceworkers
Service Workers 1
W3C Candidate Recommendation, 19 November 2019
https://www.w3.org/TR/service-workers/
https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API
Service Worker 生命周期
HTTPS & TLS
https://mozilla.github.io/server-side-tls/ssl-config-generator/
https://developers.google.com/web/fundamentals/primers/service-workers
https://codelabs.developers.google.com/dev-pwa-training/
https://github.com/googlecodelabs/tools
https://googlechrome.github.io/samples/service-worker/basic/
https://www.smashingmagazine.com/2016/02/making-a-service-worker/