What we're testing:

• Real Service Worker registration with proper scope

• Activation and claim of all clients

• Lifecycle event handling

Bot Impact: Googlebot may register but not wait for activation

What we're testing:

• Writing data to cache storage

• Reading cached data

• Cache persistence and management

Bot Impact: Bots don't persist cache between crawls

What we're testing:

• Intercepting network requests

• Modifying responses on-the-fly

• Serving content from cache when offline

Bot Impact: Critical for SEO - bots may not execute fetch handlers

What we're testing:

• Two-way communication between page and worker

• Message channel functionality

• Broadcasting to all clients

Bot Impact: Bots typically don't use message channels

What we're testing:

• Background sync registration

• Push notification capability

• Periodic background tasks

Bot Impact: Not relevant for bots - they don't support background features

What we're testing:

• IndexedDB access from Service Worker

• Data persistence across sessions

• Complex data storage capabilities

Bot Impact: Bots don't maintain IndexedDB state

What we're testing:

• Service Worker overhead

• Cache performance vs network

• Registration timing

Bot Impact: Performance metrics help understand bot crawl efficiency

SEO Best Practices:

✓ Always serve critical content server-side

✓ Use network-first strategy for content pages

✓ Implement proper fallbacks for bot traffic

✓ Test with Chrome DevTools in Googlebot mode

✓ Monitor Search Console for rendering issues