CODEWITHSUNDEEP
service-worker
Rajesh Manickam
Rajesh Manickam

Reputation: 21

Fetching cached objects in ServiceWorker - Failed

When I try to fetch the cached by checking the offline button in dev tools.Its getting no internet connection error and I tried with turning off my wifi its getting cached data.

Upvotes: 0

Views: 487

Answers (2)

Umur Karagöz
Umur Karagöz

Reputation: 3200

Offline Button

1- offline button Offline check in Chrome inspect tools fully simulates offline network state, so you do not have to turn off your modem, wifi or network adapter while using it.

Observing response source

Observing network panel You can go to Chrome inspect > Network panel and look at the size column to check the origin of a response. By just looking at there you will be able to tell a request is served from browser cache, service worker or from network.

The error

Fetch error If you are getting error because of your sw.js while you are offline, it is not a problem. It simply means it could not get service worker from network and it does not have to get it while you are offline anyway. See this answer for a more detailed information about it.

Upvotes: 1

Noize
Noize

Reputation: 187

I recommend you to install Lighthouse extension for chrome it makes the testing way easier and the reports are quite useful. Are you checking the 'fetch' event for the cache files? And are you sure you have the files cached ?

self.addEventListener('fetch', function(event) {
  console.log(event.request.url);
  event.respondWith(
    caches.match(event.request).then(function(response) {
      return response || fetch(event.request);
    })
  );
});

Upvotes: 0

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