Web for all The power of progressive web apps
summary
Shows how a real PWA uses service workers and the background sync API plus a manifest to cut server calls by 32%, reach 120 countries and drop load to ~3 seconds, with 63% household engagement reported for one client. Demonstrates caching strategies (cache-first, network-fallback, cache-then-network), registration and activate lifecycle code, an installable demo that works offline and lists cached assets in the browser. Notes limitations: iPhone Safari blocks push notifications and some native APIs remain unavailable.
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chapters (8)
- 0:00Start
- 13:29Service Workers
- 14:35What Can A Service Worker Do?
- 15:11Registering the Service Worker
- 16:02Installing the Service Worker
- 16:31Intercepting Server Calls
- 18:20Activate Service Worker
- 21:27Network falling back to cache
