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July 24, 2018

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manifest file

July 24, 2018

1. manifest.json file we need to create a manifest .json file and need to add this file in the head section of all the pages so that configuration which we have written in this file will be applied to all the pages . ex- <link rel="manifest" href="/manifest.json"> 2. what does manifest.json file contains

service worker caching

August 13, 2018

Static Elements Caching Adding different files to caches one by one , and also serving from service worker addAll for caching multiple files Dynamic caching since we don't know all the requests which we require so we can dynamically cache those , if it is not found in the caches then first make request and then store response . Adding cache versioning why do we need cache vesrsions If we will do some change in a file ,then if that file is already cached changes does not reflect since service worker will serve same old version of the files . so we have to maintain different version of cache , also we need to clean previous version so that files will be not served from previous version code used sw.js var CACHE_STATIC_NAME = 'stati...

Service Worker Basics

August 07, 2018

Service worker runs on a separate single thread . Available for all the pages of the application. Service worker lives on even if browser is closed its a background process it listen to events and react on events service worker is attached with scope and tun in background Events Listen by Service Worker Fetch Push Notification Notification Interaction Background Sync (store user response and send when internet connection is there) Service Worker life cycle Service Worker LifeCycle Steps Generally Index.html file includes app.js ( general code structure) From App.js we can register service worker while registering it emits Install event After installation is finished Activation event will be triggered (note that if there is any old version of service worker is running in some tab than this activation will be not trigg...