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What are Service Workers?

Ryan and Andrew discuss how to use a service worker to pre-cache important pages so they are available even without a network connection.

Topic
JavaScript
+2 more
All Topics
JavaScript Performance Development
Instructor
Ryan Irelan
Date Streamed
February 11, 2026

Some stuff to help you along during the lesson:

Service Workers and Offline Browsing
Modernizing our Progressive Enhancement Delivery
Going Offline: Service Workers with Jeremy Keith
HTML5 Web Workers
Service Worker JavaScript Code (sw.js)
Service Worker registration JavaScript code