Service Worker (Cycle, High Performance Loading)

Service Worker (Cycle, High Performance Loading)

Service Worker

A service worker is a script that is run in the background by your browser. We currently use them for push notifications and user identification. Everything working in the background.

Service Worker Life Cycle

The web page has a totally different lifecycle than the Service Worker. To install a Service Worker you have to first register it on your main page. Registering a Service Worker will the cause browser to download the Service Worker file and initiate its install step in the background.

High-performance service worker loading

The service worker adds significant performance benefits, which can go even beyond what is possible when compared to browser caching practices.
Here below are some good practices to be followed to try to obtain a significant performance gain.


- Never use a "passthrough" fetch handler
- Streaming composite responses
- Use navigation preload when appropriate
- Caching static HTML






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