Service WorkersPWAOfflineCaching

Service Workers: Building Offline-First Applications

Implement service workers for offline functionality. Learn caching strategies, background sync, and push notifications.

B

Bootspring Team

Engineering

February 27, 2026

3 min read

Service workers enable offline functionality, background sync, and push notifications.

Registering a Service Worker#

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Basic Service Worker#

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Caching Strategies#

Cache First (Static Assets)#

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Network First (API Requests)#

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Stale While Revalidate#

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Complete Strategy Router#

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Background Sync#

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Push Notifications#

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Service workers unlock powerful offline experiences with proper caching and background sync.

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