Cache-First Service Worker Generator
Cache-first is useful for assets that rarely change. Generate a starting point, then tune cache names and file patterns for your app.
Use Cases
- Cache static assets
- Improve repeat-load speed
- Prepare app shell offline behavior
Workflow
- 1Open the service worker builder.
- 2Choose cache-first strategy for stable assets.
- 3Copy the generated service worker code into your project.
Practical Tips
- Version cache names when assets change.
- Avoid cache-first for personalized API responses.
- Test updates in an incognito window.
Common Questions
When should cache-first be used?
Use it for stable files like hashed assets, fonts, and images that can safely be reused.
Can cache-first make stale content worse?
Yes. Pair it with versioned assets and clear update behavior.