The original title is "Building Offline-First PWAs with Service Workers: A Practical Guide"

Short summary

This tutorial walks through building an offline-first Progressive Web App using Service Workers to cache static assets (cache-first) and API data (network-first with cache fallback). It includes complete code for registering a service worker, managing cache versions, and handling fetch events. The author also highlights common pitfalls like forgetting to bump cache versions or caching POST requests indiscriminately.

• •Service Workers enable offline-first PWAs by intercepting network requests and serving cached assets
• •Use cache-first for static app shell and network-first with cache fallback for API data
• •Always bump CACHE_NAME when assets change and avoid caching non-GET requests

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