Technical SEO Wiki Entry

Service Worker

A browser-based script that intercepts network requests for caching and offline support.

Service workers enable offline functionality, advanced caching strategies and push notifications by acting as a programmable proxy between the browser and network. They are foundational to Progressive Web Apps. Misconfigured service workers can prevent updated content from reaching users and crawlers; cache invalidation strategies require careful design.

Related Entries

Progressive Web App (PWA)

A web app technology delivering app-like experiences with installability and offline support.

Browser & CDN Caching

Storing copies of resources to avoid repeated downloads on subsequent requests.

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