offline-caching

问题 I'm using AngularJS and I'm developing SPA. My goal was to provide offline brwosing. JSON data can be easily stored in js variables, images can be cached in Image objects. So now I'm wondering.. if one person goes offline and tries to browse the content, what will happen? 1) the browser can't load the image because, being offline, it can't check what is the most-recent version of the image (the one cached or the one online) 2) the browser finds a reference for the image in the cache. The

问题 I need to clear browser cache when I push an updated javascript file on server. A simple answer would be to use below technique of query string. <script type="text/javascript" src="/js/myjsfile.js?{my file version}"></script> It would work but Do I need to do this on every single script tag of every single page of my application? Can I do this at main screen like login which loads at the beginning and I assume that would clear the cached file with new one, would it work? 回答1: "Do I need to do

问题 I intend using a Service Worker to make a Web App available offline. The cache Storage shows the files when I have Internet Connection. However if I go Offline the cache seems to disappear. I do not have enabled the checkbox of Update on Reload in the Service Workers tab. The fetch event of my service worker is: self.addEventListener('fetch', function(e) { console.log('[ServiceWorker] Fetch', e.request.url); e.respondWith( caches.match(e.request).then(function(response) { return response ||

问题 I'm trying to cache HTTP responses from my company API but it looks like the app cannot access the cache directory: W/System.err: remove failed: ENOENT (No such file or directory) : /data/user/0/com.appname/cache/cache_file/journal.tmp W/System.err: java.net.UnknownHostException: Unable to resolve host "www.domain.com": No address associated with hostname I have followed this tutorial. Here is how I setup Retrofit (2.1.0): import lu.CompanyName.R; import lu.CompanyName.interfaces

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: HTML5 Cache — Is it possible to have several distinct caches for a single URL? My app uses the concept of Projects, each Project has multiple support files (primarily image files and pdf's) that need to be made available offline. I want to use HTML5 cache-manifest to accomplish this. If I include all the support files for all the projects in the cache-manifest it would be massive and not feasible. (I.e. there

问题 When going offline, I get the following error by my service worker: (unknown) #3016 An unknown error occurred when fetching the script my service worker looks like this: var version = 'v1' this.addEventListener('install', function(event){ event.waitUntil( caches.open(version).then(cache => { return cache.addAll([ 'https://fonts.googleapis.com/icon?family=Material+Icons', 'https://fonts.googleapis.com/css?family=Open+Sans:400,600,300', './index.html' ]) }) ) }) this.addEventListener('fetch',

问题 I have followed the tutorial given here for HLS caching, but the control never reaches to any of the delegates ( of AVAssetDownloadDelegate ). Am I missing anything? Here is code I wrote - (void)setupAssetDownloader { NSURL *assetURL = [NSURL URLWithString:@"STREAMING_HOST/video/hls/3729170.m3u8"]; AVURLAsset *hlsAsset = [AVURLAsset assetWithURL:assetURL]; urlSessionConfiguration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:@"assetDowloadConfigIdentifier"];

问题 I have implemented offline caching in my app and for that I am storing images in external storage.I am automatically deleting the cached data based on the available space in external storage and once the limit reaches the specified value.I want that cached data to be remain hidden from user so that user can't access it.Is it possible to hide the cached data from the user?Or is there any way i can make cached data folder visiblity invisible in external storage? 来源： https://stackoverflow.com

问题 I'm currently working on adding HTML5 offline support to my web application, and am mostly following the same approach of mgwt: Generate manifest files per permutation at compulation time Using a servlet to serve the manifest file, based on the user-agent of the browser. My question involves step 2: In my servlet, I want to detect which permutation to serve for a certain request. The way I do this now is: Get the user agent string from the request Map this (using simple string operations (e.g

问题 I am developing a chat app that uses firebase database to store data. The usual approach while developing a chat app is to keep the database nodes synced so that you access the messages offline. So the problem rises when I implement the firebase offline capabilities to keep the data nodes synced. Firebase suggests two required steps for accessing data offline: Enabling disk persistance this is enabled according to the documentation by using this line of code (in my case I add it in