Service worker lifecycle

Caching assets and api calls — Service Workers can be used for both cases , while it’s understandable that caching api calls is beneficial for caching server response effectively offloading servers and providing offline experience to customers, assets caching is also beneficial — remember that browser caching is still …

Adding a Service Worker and Offline into your Web App

A service worker is a script that your browser runs in the background, separate from a web page, opening the door to features that don’t need a web page or user interaction . Today, they already include features like push notifications and background sync.

Apart from the obvious use case of returning cat pictures to every image request, we have found developers mainly use service workers primarily for 2 tasks. Service workers have mostly been associated with offline support for web applications and for push notifications for re-engaging with users .

Web workers and service workers are two types of workers available to websites . They have some things in common: Both run in a secondary thread, allowing JavaScript code to execute without blocking the main thread and the user interface.

Chrome. Open DevTools in Chrome. Click the Application panel, and then click Service Workers in the navigation bar. If a service worker is installed for the currently open page, you’ll see it listed on this pane.