Tag
offline
- Jan 22, 2026 Fetch Event Interception and Response Construction How a service worker receives requests, what respondWith accepts, why a rejected promise produces an error page instead of a network fetch, and which requests never reach the handler. web platform
- Oct 21, 2025 Service Worker Lifecycle and the Registration Scope How a service worker moves from registration through installation and activation, why a new version may wait indefinitely, and what the scope URL decides about the requests it can intercept. web platform
- May 20, 2025 Offline Navigation, App Shell, and Fallback Routing Why navigation requests need their own handling in a service worker, the trade between shell-based and per-URL caching, and how navigation preload removes the worker-startup delay from the critical path. web platform
- Jan 17, 2024 Background Sync and Deferred Work How sync tags schedule retries after a failed request, why the payload must live in IndexedDB, and what the periodic variant does and does not guarantee about timing. web platform